I dunno man, seems like a good way to get shot. I'm assuming this is a public access road? If it is, you don't really have authority to be running people off regardless of whether they're taking a leak and littering or not. Then you show up with a flash light in their face and a gun in hand? Looks like you didn't even notice there was another person in the back seat that whole time. You'd be dead if these were bad guys and not just idiots who needed to piss. Maybe there's more to it that I don't know about, but I'd re-evaluate your approach.
Don't get me wrong. I understand the frustration. I spend more time than I'd like running drunk college kids off of my boat dock, but it's a bit different dealing with kids from a distance who obviously aren't armed than what this video shows.