It s also down to the crowd you have.
You have lots of parents dropping of their kids at the track for the day or the afternoon, so it s also down to the adults present (not just the owner of the place, they cant do everything all the time..) to make sure that it s a place that s safe and enjoyable in all aspects...
R/C tracks crowds are, from my humble experience, far less prejudiced and way more open towards each other than people are in "normal" life, so i think its good to try to keep that.
and what about violence on interweb's forums ?