Those who attended either of the sessions I was involved with at the ASSA meeting know that the audience included some hecklers. During the first session, I was the target. During the second, Larry Summers was. (At one point, the moderator Bob Hall threatened to call security.) Here is a Washington Post article about the hecklers.
After the first session was over, one of the hecklers came up to me and asked, "How much money have the Koch brothers paid you?" My answer, of course, was "not a penny."
I don't find it odd that people disagree with me. I am always open to the possibility that I am wrong about lots of things, and I much enjoy talking with students and colleagues who have views different from mine. But I do find it odd that people who disagree with me are sometimes quick to question my sincerity. If I am wrong, it is sincere wrong-headedness, not the result of being on some plutocrat's payroll, as some on the left want to believe.
The hecklers probably limit their own effectiveness by questioning the motives of those who disagree with them. I have found that to convince other people, it is usually best not to assume your own moral superiority but rather to talk with them as equals who just happen to have a different point of view.