actor1: Protesters (Algeria)
actor2: Police Forces of Algeria (1999-2019)
notes: Police prevented Berbers from staging a protest march in Algiers, blocking roads and arresting at least several dozen people as they attempted to assemble. Others who made it past the police staged a sit-in before dispersing peacefully.
target_text: actor1: Protesters (Algeria), actor2: Police Forces of Algeria (1999-2019)