Good God. That video only demonstrates how far we have fallen. You would think that such displays of ignorance wouldn't be so breathtaking but in my case it is. I'm embarrassed for our country. And to the Trump supporters do you wonder why those who don't support Trump consider those that do to be nothing more than a mob? I get that not every voter is a die-hard political animal with facts and statistics at their fingertips (it's why we've coined the acronym LIV) but this video just demonstrates the lack of the most basic attributes like logic and reason.
The fact is the entire country has shifted left and along with that is a loss of these attributes even from those who we would call, in the most generic of senses, on our side. There is a danger here. And the 'smart' Trump supporters who think they are using the mob i.e., LIV's, Reagan democrats, the non-political first-timers for their own ends will find that even if they succeed they will have failed.
There's a bit more here at which you hint, but which I will spell out:
This Trumpette (and the others in the background) is using standard libtard tactics. While being confronted with a reasonable dialogue, he instead yells insults and attempts to drown out reasonable conversation. He sticks to false memes and thinks that by yelling them more loudly, they gain credibility.
Now, think of the leftists on the university campuses that think the only way to engage conservatives is to drown them out, protest them, and run them off. This a$$hat, with sign in hand, is acting in the exact same way. I see very little difference between the Trump crowd and the leftists (ex. "If anyone throws a tomato, beat the crap out of them" vs "Muscle! I need some muscle over here!")
This is what we are allowing the conservative movement to become. It would be hysterical if it weren't so sad. The Trumpettes think they are railing against the "uniparty" but their people act with more homogeneity with the lefties that they might as well just join them.