Only real way to make any change is to get a whole lot of people to talk to the local and state goverment. It would take a lot of time/effort to get anything done, and even then it's not a sure thing. And the only way to protect yourself from local police is to know your rights and have a good lawyer.

We get a lot of harassment from cops at our local D&D. I wrote to the Hernando County police department, whom basically gave me no advice at all.

Just an example of what happened recently. Me and 4 other friends were standing out front of a D&D drinking coffee. We were out there since were all smokers. We weren't being loud at all and were out of the way of any patrons that might pull up. Well a cop came up and said "you need to leave", i asked the police officer "even if we have products from here??", he said "yes even if you have products". I said "well can we go back in and sit down", and he said "no your leaving". Being that we were getting kicked out we were trying to discuss where to go. I guess 15 seconds was too long for us to discuss this and he started yelling asking us "why were not moving yet". Anyways we left... but that was the biggest b.s. i have ever seen in my life.