With fears of impending violence mounting on the eve of the Republican National Convention, the head of Cleveland’s largest police union called for Ohio Gov. John Kasich to temporarily ban the open carrying of guns as crowds of protesters and politicians arrived in town before the Republican National Convention.

Stephen Loomis, president of Cleveland Police Patrolmen’s Association, told CNN that he planned to send a letter to Kasich requesting immediate executive action. The demand arrives on the heels of two shootings that left five law enforcement officers dead in Dallas earlier this month and three officers dead in Baton Rouge on Sunday.

After the July 7 attack in Dallas, officials said that they struggled to distinguish between people lawfully carrying long guns in the open and a gunman who was targeting police — spawning confusion and leading authorities to misidentify at least one armed protester as a suspect in the deadly shooting rampage.

“We are sending a letter to Governor Kasich requesting assistance from him,” Loomis told CNN. “He could very easily do some kind of executive order or something — I don’t care if it’s constitutional or not at this point. They can fight about it after the RNC, or they can lift it after the RNC, but I want him to absolutely outlaw open-carry in Cuyahoga County until this RNC is over.”

A spokeswoman for Kasich said Sunday that the governor could not suspend open carry at the convention.

“Law enforcement is a noble, essential calling and we all grieve that we’ve again seen attacks on officers,” the spokeswoman, Emmalee Kalmbach, said in a statement. “Ohio governors do not have the power to arbitrarily suspend federal and state constitutional rights or state laws as suggested. The bonds between our communities and police must be reset and rebuilt — as we’re doing in Ohio — so our communities and officers can both be safe. Everyone has an important role to play in that renewal.”

According to a guidebook released by the office of Ohio Attorney General Mike DeWine, “Ohio’s concealed carry laws do not regulate ‘open’ carry of firearms. If you openly carry, use caution.”

The document, which focuses on the state’s concealed-carry law, adds, “The open carry of firearms is a legal activity in Ohio.”

The Secret Service said months ago that guns will not be allowed within the convention security perimeter that surrounds Quicken Loans Arena, noting in a March statement that “only authorized law enforcement personnel working in conjunction with the Secret Service for a particular event may carry a firearm inside of the protected site.”

Cleveland's residents are preparing for the beginning of the RNC, as tens of thousands converge onto the city under heavy security. (Dalton Bennett/The Washington Post)

But gun owners who are legally allowed to carry firearms will be permitted to do so within the convention’s larger “event zone” — an area that is 1.7 square miles.

Among those planning to bring firearms to rallies in Cleveland is the New Black Panther Party

Last week, the group’s chairman, Hashim Nzinga, told the Reuters news agency that members plan to carry firearms as a means of self-defense.

“If it is an open state to carry, we will exercise our Second Amendment rights because there are other groups threatening to be there that are threatening to do harm to us,” Nzinga told Reuters. “If that state allows us to bear arms, the Panthers and the others who can legally bear arms will bear arms.”

Supporters of presumptive Republican presidential nominee Donald Trump also are expected to walk the streets of downtown Cleveland bearing arms, Reuters reported.

There was no sign that anyone brought guns to the first protest march, held Saturday.

But on Sunday, a man with a long rifle slung over his shoulder attracted a cluster of cameras and curious onlookers.

“We’re not going to impede their Second Amendment rights,” Cleveland Police Chief Calvin D. Williams said at a midmorning news conference.

But he said people have a legal responsibility not to menace anyone with those weapons — or to be perceived as being menacing.

After the news conference, Williams said in an interview that his officers have been trained to approach anyone carrying a gun openly and explain the law to them.

“We keep an eye on them,” Williams told The Washington Post. “If we think they’re an issue, we kind of stay with them. If we don’t think they’re an issue, they go about their business.”

Loomis went a step further, telling CNN that officers would increase inspections among anyone holstering a weapon in the downtown area designated for the convention.

“We are going to be looking very, very hard at anyone who has an open carry,” he said. “An AR-15, a shotgun, multiple handguns. It’s irresponsible of those folks — especially right now — to be coming downtown with open-carry AR’s or anything else.”

“I couldn’t care less if it’s legal or not,” he added. “We are constitutional law enforcement, we love the Constitution, support it and defend it, but you can’t go into a crowded theater and scream fire. And that’s exactly what they’re doing by bringing those guns down there.”

In a statement Sunday, Dan Gross, president of the Brady Campaign to Prevent Gun Violence, said he supported the police union’s request.

“Limiting open carry outside the event seems a natural next step, especially given the heightened tensions in our nation and today’s tragedy in Baton Rouge,” Gross said, adding: “Gov. Kasich owes it to law enforcement — and the public — to eliminate the obvious additional risk presented by allowing anyone to carry a gun anywhere any time outside the convention.”

But a Second Amendment advocacy group called Ohio Carry celebrated the response from the governor’s office.

“We applaud Governor Kasich, as he knows you don’t simply suspend the constitution because you have a big event,” Ohio Carry wrote on its Facebook page. “That is outlandish and dangerous. Thank you Governor Kasich for not entertaining such a notion.”

A previous version of this story incorrectly said that Ohio has an open-carry law. It does not, though open carry is legal in the state. This post has been corrected and updated.