A few dead animals are seen in the opening scene. (They don't look very real, so it's not likely children will be upset.)
Some shots fired. Under influence of aliens, the mayor becomes violent and is shot by police.
A cop stops when he sees a body in the road. When he approaches, the body gets up and begins fighting. Another man with beard holds a shining container. Kneeling down, something from the container is added to the cop. They all stand up and drive away.
A fight develops outside a radio station between four men, two of whom are possessed by the parasites.
Gunfire erupts between two cops who are possessed and the main characters.