Oakland Mayor Libby Schaaf, who sparked national outrage when she undermined a federal immigration raid last month, worked with illegal-immigration activists before she warned the public about the raid– a move that ICE said led to hundreds of illegals evading detention.

Schaaf took to Twitter to warn the public about the raid, and has stood by her decision despite a number of hardened criminals being caught — and ICE officials warning that potentially hundreds of other criminals escaped as a consequence of the tipoff.

“It is Oakland’s legal right to be a sanctuary city and we have not broken any laws,” Schaaf said in a statement last month. “We believe our community is safer when families stay together.”