. >> crowd is bigger and clouder at the moment. there is yes.people apparently love critical mass, 20 years. this will be the same as the halloween ride, end of october. biggest ride every year. over the years we've seen crowds this big i think before but it's smaller. >> how do you know when to go? who is lead something. >> no one leads this ride. this is no one in charge. everybody just takes responsibility for them selfs and does what they need to do. we know when to meet. last friday of the month. and they're taking off looks like they're going down for market. and. >> mark, thank you very much. and coming up next demise of the great white shark. >> now under consideration as a >>> responding to wildlife groups federal regulators might consider listing great white sharks as endangered species. this will take about a year for a decision to be made. and very little is known about great white sharks especially breeding habits. >> there is a state of the art facility in the fight against hiv-aids opened today. the mayor joined officials in the r