Mayor Thomas Menino, who is recovering from a broken leg unrelated to the bombing, watches on as President Obama speaks during an interfaith healing service last week following the Boston Marathon blasts.
Tucson Mayor Bob Walkup poses with then-U.S. Rep. Gabrielle Giffords during a Salvation Army fundraiser about a year before she was shot in the head.
Credit Brandi Jade Thomas / AP
Minneapolis Mayor R.T. Rybak and President George W. Bush tour an area near a collapsed interstate bridge, which left 13 people dead in 2007.
It's lunchtime in the heart of Sao Paulo's financial district. Surrounded by tall buildings of cool glass and steel, men and women in suits and business attire walk back and forth busily in Brazil's largest city.
Standing amid the bustle is Leticia Matos — who is, for want of a better word, a crochet artist. She couldn't look more different from the people around her.
Wearing a short-sleeve shirt and covered in bright, quirky tattoos, Matos is at work, too. About a year ago, she says, she got the idea for her project while knitting and crocheting with her friends.