He was charged with "interfering with public duties":
A San Marcos man was arrested after rescuing a swimmer from the swirling waters near a restaurant on the San Marcos River over the weekend.
Police say Dave Newman, 48, disobeyed repeated orders by emergency personnel to leave the water. The police report does not mention Newman's rescue of 35-year-old Abed Duamni of Houston on Sunday afternoon….
[Rev. John] Parnell and another man blocked the police officer's path to the squad car while other members of the crowd yelled at the police, telling them Newman had saved Duamni's life and should not be arrested.
[Via Lew Rockwell.]