All day. First Annual World Trade Center Responder Day honoring 9/11 rescue, recovery and clean-up workers. 11 a.m. Motorcycle procession from 55 Water St. to Barclay and Greenwich streets; Noon. opening ceremony, corner of Greenwich and Vesey streets; 1 p.m. to 6 p.m. Responders speak of their experiences, Greenwich and Vesey streets; 2 p.m. to 3:15 p.m. Interfaith remembrance service, St. Peter’s Church, Barclay and Church streets; 1 p.m. to 5 p.m. Mural painting at St. Paul’s Chapel, Broadway and Fulton Street; 7 p.m. to 8 p.m. Concert at St. Paul’s Chapel, Broadway and Fulton Street.
Noon. Congressman Greg Meeks joins activists and elected officials at Journey to Justice March and Rally; Roy Wilkins Park, 115th Avenue and Merrick and Baisley boulevards, Queens.
10 a.m. Schools Chancellor Joel Klein joins Rev. Al Sharpton’s live radio broadcast and rally; National Action Network, 106 West 145th St., at Lenox Avenue.
10:15 a.m. Protest rally against Columbia University expansion plans; Manhattanville Community Center, 530 West 133rd St.
10:45 a.m. Soldiers’, Sailors’, Marines’, Coast Guard and Airmen’s Club celebrates Flag day and the 233rd “birthday” of the U.S. Army; 283 Lexington Ave.
Noon to 4 p.m. Department of Transportation hands out free green bicycle helmets; Central Park Naumburg Bandshell, Mid-park at 72nd Street.
2 p.m. Same-sex marriage rally; City Hall Steps.
2 p.m. Anti-Church of Scientology protest; 227 West 46th St.
6 p.m. Panel discussion on the crisis in Black education; Bethesda Baptist Church, Jamaica Avenue and 179th Street, Jamaica.
8:30 p.m. Bill Thompson marches in the annual Brooklyn Pride Parade; 15th Street and Prospect Park West, continuing along Seventh Avenue to Lincoln Place.
8 p.m. Concerned Democratic Coalition party; Coogan’s, Broadway and W. 168th St.