The SS does what the pres says. If he says non violent protesters stay then they do.
No president in the last 10 years has any respect for free speech or assembly.
A lot of the protestors on the far left have a history of violent protest, whereas there is no such history with FR protestors.
I had an opportunity to "Freep the Creep" my first time I went to the Saturday Freep at the White House. I got there before anyone else, and wasn't sure where to go, so I wandered around the perimeter of the White House with my sign and my costume (Clintonstein) looking for the right spot. Well, lo and behold, as soon as I neared the SW gate, a motorcade started to pull out - a Presidential Movement! I started to reach into my bag for my sign - and then realized that it wasn't such a good idea to be reaching into a bag for something with Slick's limo approaching and armed and nervous Secret Service guards all about. So sometimes it's best to not worry about the president and instead make your point to the media or fellow citizens.
Perhaps you are too unhappy in this oppressive country. Perhaps you might discover another country is freeeee-er?
The 1st ammendment does not give protestors license to spray spittle in the Presidents face.
There have always been limits on rights. You can't yell fire in a theater, you can't have a whiney liberals meeting in the middle of Interstate 40.
Get over it.