Ok so i was smokin a blunt the other night after work and a cop come up and i ran away and he chased me and?

he was yelling stop stop and i kept running but then after a while i decided to stop because that is the right thing to do not because i was tired and the cop tackled me which is violation of my civil right and then arrested me but the thing is it wasnt weed really it was just parsley so i am going to sue him do you guys have any tips?