Silence only helps the oppressor, never the oppressed. Your silence is what empowers them to continue spouting their bullshit, not people standing up to them regardless of what the law says.

We do not tolerate intolerance. If they want a fight, then give it to them.

The only takeaway is to recognize that the law is not your friend, it is actively what empowers them to have a voice and acts as a shield for them to hide behind.