We gotta get real with this.
Any group can call themselves whatever they like. This group calls themselves Christian. So do the Westboro “Baptist Church” folks, but their actions are FAR from Christian. The Baptist Church has totally denounced them.
You need to judge a tree by its fruit.
WHY target the funeral of a police officer, actually seeking to kill other officers mourning the loss of a friend? There’s nothing Christian about it!
Some charismatic schmuck (most likely mentally ill) convinced a few weak people that he had the answer. It’s happened before. Many times.
It needs to stop. The more attention they get, the worse the problem will become.
I commend you for your common sense.