We’re in the minority here but you’re not alone.

This guy is expressing a perfectly valid and mature attitude which is exactly what you said.

These people are hating on him because they’ve not left their comfortable worlds of childhood, and have never been in a situation where they had to learn anything about violence.

Sheltered, bitter, hateful people with nothing better to do than to photoshop some random stranger’s clothing so they can have their two minutes’ hate for the day.