If you chose another bias, you might say Wheeler's primary concern is for the families of those that just lost friends and family members.   Or,  he might be justifiably concerned with violence, another Christian could be attracted, or maybe an anarchist looking for revenge.    These are both public safety issues and some compassion for families who lost loved ones.

By the way, anyone can exercise their free speech on a daily basis.    You don't need a dog and pony show to attract attention to speak your mind in any number of ways.     These free speech rally's mean nothing in my life.  I've never been stopped from speaking my mind, or writing my thinking on paper.