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When Robert F. Kennedy Human Rights announced in September that it was planning to bail out hundreds of women and teenagers from Rikers Island as part of a national campaign to demonstrate that cash bail discriminates against the poor and minorities, the response from New York City officials was less than enthusiastic.

The mayor, the police commissioner and the city’s district attorneys all said they worried that public safety might be put at risk.

At first blush, those concerns may have been misplaced.

In October, hundreds of volunteers acting on behalf of the advocacy group posted $1.2 million in bail to free 105 people from Rikers Island and other city jails.

Of the 90 who have since had scheduled court appearances, only two failed to show up as of Friday, according to the group. One was rearrested on a nonviolent misdemeanor charge, and the other has stopped responding to a lawyer, according to Wade McMullen, supervising attorney for the group.