Supporters tried to shout him down with chants of "Marco! Marco!"
The man was removed by uniformed officers and later identified himself to a reporter.
Caught him on the way out & he identified himself as "Dick Zinnendorf" and said he was shouting "that Marco Rubio's owned by Jews."— Alexandra Jaffe (@ajjaffe) January 6, 2016
"That has never happened before," Rubio told the crowd.
Indeed, Rubio events tend to be interruption-free. Immigration protesters have demonstrated at Rubio fundraisers and other gatherings in different places. But they usually remain outside.
A heckler was escorted out of a Rubio speech in New York earlier this year and immigration protesters interrupted him at a conservative confab in Washington. But those were both events hosted by or held in conjunction with other organizations.
Rubio drew between 800 and 900 people to his event here in Dallas, according to a campaign estimate. He is also in Texas to raise money. Former Texas Rangers owner Tom Hicks is hosting an event for him.