Dealing with rude teenagers in the neighborhood -RANT!!!!

So these kids literally think it is OK to leave trash in my yard and have the worst potty mouth. I have already gone out there once and had to tell them to stop bullying a little kid. Who is four years old! No body watches these kids including the four year old and his 10 year old sister. I am in no way telling a parent how to parent but what the hell are they thinking leaving them out there destroying yards, unsupervised and with the WORST potty mouths......i just went and got our mail. I know one thing if I spoke like that with my mom around she would've smacked me so hard up side my head I'd see stars.. My son will NOT be out there at all.....oK rant finish...