What can I do about thes loud anoying obnoxious neighbors that moved in by law?

well you can talk to a lawyer, you should tell him you are being threatened or harred. and noise complaints should still be important before ten just say you sleep early. why don't you park in front of your own house? if anybody parks in front of yours have them towed. there are small things like spikes are large rocks that you can use to border your property to prevent other people from parking there. also if they come onto your property you have the right to defend it. get a gun or a tazer