Nineteen Los Angeles police officers face discipline over the use of batons and other force on peaceful demonstrators and journalists at an immigration rights rally last year.

Internal affairs Cmdr. Richard Webb says his department found cause to recommend discipline against the officers for their actions during the May Day rally in MacArthur Park. He presented the findings to the city's Police Commission on Tuesday.

Chief William Bratton will decide any punishments.

Officers wielding batons and firing so-called non-lethal rounds swept people from the park after a small group of agitators threw things at police.

Commission Vice President John Mack expressed concern that only those of lower rank appeared to be getting disciplined.

Watch a Clip of the Police Shooting Rubber Bullets at Peaceful Protestors