Assertion: police | /r/CapableOf | open fire
Facets:
value: on may
type: TEMPORAL
value: in an event
type: TEMPORAL
value: before killing at least four demonstrators
type: TEMPORAL
Source sentences:
text: Other police then opened fire, before or after they were fired on by people in the crowd (accounts vary) killing at least four demonstrators and wounding an undetermined number, in an event known as the Haymarket Riot; the events have been referred to as a police riot[citation
text: On May 15, 1969, police opened fire on protesters in People's Park in Berkeley, California, which resulted in serious injuries for some protesters.