Gay San Francisco health advocate Gary McCoy has dropped one of the defendants in the $1.9 million lawsuit he filed May 9 after she reposted a Twitter meme accusing McCoy of murdering 1,500 people at the Tenderloin Linkage Center. He is still suing the alleged source of the offending tweet, an individual who goes by what is assumed to be a pseudonym, Karl Brandt, although that person's identity has not yet been confirmed.