WHAT: Rally followed by Critical Mass Ride WHEN: Friday, May 30, 2008 at 7:00 PM WHERE: Union Square Park South at 14th Street Another rally is scheduled tonight to protest the verdict in the Sean Bell shooting trial and this time participants are using bikes to pedal their message. Reverend Al Sharpton and Bell’s fiancée Nicole Paultre Bell plan to take part in the Critical Mass bike ride, a monthly bike ride through city streets, which typically advocates for safer streets and a cleaner environment, but the group has taken on other causes in the past.