That's the Constitution

People don't have the right to protest? Why not?

"The protests thus far have come in the form of impromptu marches down various thoroughfares, disrupting traffic and raising a minor ruckus here and there. Los Angeles Police Department officers have arrested a handful of protesters, but most of the marchers have been voicing their opinions loudly but peacefully nearly every day since the election.

But even peaceful demonstrations can be disruptive to a community, and it’s been disheartening to witness the lengths to which the management of the LAPD has acquiesced to the disorder engendered by these protests."

Isn't that the right to assemble, as granted by the 1st Amendment to the Constitution? Maybe I'm wrong, but I thought all people had these constitutionally supported rights.