Adachi is the murderer.

Jizz and Blood in the fishtank.

A very handsome guy eating chili.

Someone is throwing tomahawks at animals.

The Moon Mooning earth.

Tower of Power.

A man enjoying a toast.

White Power.

A man masturbating in public.

A man with a coat masturbating while watching 2 guys talking.

Nazi Christmas.

I have no idea.