A man wearing a sticker joins protesters at the entrance to Twitter's headquarters in San Francisco, California (7/11). The protest was against corporate tax breaks and high housing costs, which the protesters blame on the social media company. REUTERS/Robert Galbraith

Joining a group of about 18 demonstrators outside Twitter's San Francisco headquarters, protesters call for increased corporate taxes and affordable housing on Thursday. Twitter's stock opened at $45.10 when it began trading Thursday on the New York Stock Exchange. AP/Noah Berger

Protesters with signs gather at the entrance to Twitter's headquarters in San Francisco, California (7/11). The protest took place after Twitter Inc's IPO on the floor of the New York Stock Exchange in New York. REUTERS/Robert Galbraith

A protester holds up a sign as they gather at the entrance to Twitter's headquarters in San Francisco, California (7/11). The protest took place after Twitter Inc's IPO on the floor of the New York Stock Exchange in New York. REUTERS/Robert Galbraith

A musician plays the guitar among protesters at the entrance to Twitter's headquarters in San Francisco, California (7/11). The protest was against corporate tax breaks and high housing costs, which the protesters blame on the social media company. REUTERS/Robert Galbraith

Denise D'Anne is reflected in the mirror of her motorized wheelchair as she joins protesters at the entrance to Twitter's headquarters in San Francisco (7/11). The protest was against corporate tax breaks and high housing costs, which the protesters blame on the social media company. REUTERS


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