Second, we want to make them think about their opinion so that they can see that they're wrong. If you're combative like in your comment above, they're just going to dismiss you as an asshole and not listen to the point you're trying to make.
Whenever we have big protests, we get tear gassed, shot with rubber bullets, beaten with nightsticks, and arrested. Why do you think this time would be different?
This is what one would expect Plain Simple Garak the Tailor to say.
Out loud.