Scott Walker was confronted by protesters during a speech at the Iowa State Fair's "Soapbox" on Monday. His response — pointed and aggressive as hell — amounts to the best moment the Wisconsin governor has had on the campaign trail since he formally entered the presidential race.

"I am not intimidated by you sir or anyone else out there," Walker says, loudly, to a protester in the front row. "This is what happened in Wisconsin," Walker added. "We will not back down."

Walker has struggled mightily to show passion on the campaign trail or the debate stage thus far in the race. To a certain extent he's tried to embrace that vanilla-ness, but being "the boring guy" in the race  — particularly a race currently being dominated by Donald Trump — has its limits.

Walker's willingness to face down a protester while staying exactly on message is impressive. Walker's great strength in the presidential race is that he has fought Democrats and won in Wisconsin.  The I've-been-there-and-done-that message is a winner for Walker.  The more he looks and sounds like a fighter, the better. A little passion can go a long way for Walker.

Watch the last 10 seconds or so of the clip above.  The "this is what happened in Wisconsin" line is both a) very good and b) very well delivered.

Don't be surprised if you see some of that 27 seconds (or a lot of it) in a 30-second ad for Walker in Iowa or New Hampshire some time soon.