It's because it'll make liberals look bad. 

Disgusting how many people make fun of conservatives all the time, but will become defensive if we criticize the actions of many bernie supporters and BLM activists.

Im not even conservative and I'm sick and tired of all the things liberals do. If it was trump supporters in that video, it would've been all over the news. people would go ahead and say conservatives are evil, etc etc

edit: I'm watching the video for the fifth time now, and I'm still in disbelief.

what's the point in doing all of that? And who's violating the rules? It looks like the policemen are trying to stop a swarm of people entering, but I can be wrong.

Well the Guards have to be careful who they let in especially when there are important people in that convention like President Obama. 

I hope Hilary wins. Trump is the worst anything ever.

Both her and Trump are bad, but I hope she wins. Trump winning would be a disaster.

I'm kind of pulling for Trump. I mean, let's be honest, he's going to be a lot more entertaining. He also won't get any of his crazier proposals passed because he won't have anyone on his side in Congress. It would be four years of him complaining and blaming Congress and the Supreme Court for shooting him down.

The fact that this election has devolved into "Which one isn't the worst" instead of "Which one is the best" speaks volumes.

If you like what Bernie was saying, and don't want to vote Hillary now, just look into Dr Jill Stein from the Greens, word for word the same as Bernie

https://www.youtube.com/watch?v=xP3xNTiFLr4

I also don't want her to win. She isnt trust worthy and Trump would be more entertaining etc.

Trump will lose. He's sabotaging his own campaign. Every time he opens his mouth he shows how unfit he really is.

Hillary is going to be the next president. Trump will crumble over the next few months.