I really want these cars towed away.
Is there a specific reason to have these cars towed?
I don't want these cars in front of my house
It's okay to move someone else's vehicle if it has broken down, or if it is illegally parked on your property.  But even if these cars are a hindrance to you, if they are parked on a public street, you can not legally have them towed.
I'm going to get them anyways
It is ok to want people to park somewhere else. IF you don't own the property they are parked on you should not. You could really hurt someone by having their car towed if they can't pay.