I study Aikido. The guy who brought Aikido to the Tokyo Riot Police had a great quote:
"The greatest technique in Aikido is to take a person who is trying to take your life, and make them into your friend"
He was famous for being very small and fast and demonstrating this technique where he jammed his finger into your trachea causing respiratory distress. He also once was challenged by a young man who studied judo with a close friend from his high school judo club. He broke his arm; then, he broke the other arm.
One of his students said he only used Aikido once in an actual self-defense situation. Somebody got really drunk and pulled a knife on him at the bar and he threw the guy with the arm that didn't have the knife; the person he threw didn't get up and he got scared that he might have injured the man and ran away. Later, when he confessed to his teacher that he had left the guy without calling for help, this teacher asked him if he took the knife and finished the job and screamed at him when he learned he hadn't.
So yeah, forgiveness and love, but only after you've neutralized the threat. These people are seriously dangerous, it's not normal to depict a hate symbol kicking the gay flag and it's not normal to plan a terrorist attack against Somali refugees. They can't have political power or be allowed to commit terrorist acts, as long as that is satisfied I'm OK with forgiveness.