A march in support of Trayvon Martin, a black teenager shot to death in February by a neighborhood watch volunteer in Florida, was organized Wednesday evening in Union Square. People around the world tweeted photos of themselves wearing hoodies -- what Martin was wearing when he was shot -- to show their support.
Trayvon Martin Case Sparks Social Media "March"
Supporters marched Wednesday in Manhattan, but people worldwide are tweeting photos of support.
Trayvon Martin in an undated family photo.
Wednesday, Mar 21, 2012 Updated at 9:54 PM EDT