It was never planned to be a biker brawl or as a criminal meeting. They have these meetings once or more a year to discuss politics issues such as helmet laws, insurance, and other biker safety issues. It's also a social gathering for talking shop and meeting people. Most of the attendees are not in the outlaw gangs. The issue is that some outlaw gangs always show up to flex their muscle and act tough, but most of the time nothing happens. The rest of the bikers have no reason to hide form the cops and you really can't hide because the meeting site and time is made public for all MC's. The only beef was between the Cossacks and Bandidos and I don't think they planned on any violence considering the place was surrounded by cops.