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Twitter Inc. Chief Executive Officer Dick Costolo Interview
Richard "Dick" Costolo, chief executive officer of Twitter Inc., speaks during a Bloomberg Television interview in San Francisco, California, U.S., on Wednesday, March 18, 2015. More than three dozen technology-industry executives, including Costolo, issued a joint statement urging lawmakers to enact legislation protecting gays and lesbians from discrimination, responding to controversial religious-freedom measures in states such as Indiana and Arkansas. Photographer: David Paul Morris/Bloomberg via Getty Images