Nope. The First Amendment applies to everyone. And they’re perfectly within their rights to chant slogans about killing cops, just as I am perfectly within my rights to reach conclusions based on their doing so.
If you think I’m a racist because I oppose cop killing and people justifying it based on lies, then I’ll proudly wear the label. Being slandered as a racist by an SJW is a badge of honor.
And no, I’m not a white supremacist — but I’m not a white hater, either. Unlike, apparently, you.