Nothing, besides a woman's dress gets torn. It only shows her shoulder though.

Martians are shot (not gory).

A martian jumps at a man forcing the two of them to fall to their deaths (not gory).

A man hits another man on the back of the head knocking him out.

A dad slaps his son knocking him on the floor.

None

Nothing to speak of.

These things could be frightening for a young audience.

"Mankind: Developed to It's Ultimate Intelligence" (leader of the martians) is a kind of creepy.