At an annual forum held last week for Sheriff Robert Doyle to describe his cooperation with Immigration and Customs Enforcement, Canal Alliance representative Lucia Martel-Dow shared a distressing scene, recorded on video by a community member. 

The night before the forum, a 19-year-old undocumented man was released from the Marin County Jail. His family waited in the parking lot for him, but so did an unmarked van carrying plain clothes officers ready to pick him…