WATCH: Samuel L Jackson sings a song to highlight the recent anti-police-brutality protests

"Come on sing it out"

Samuel L Jackson has sang a song to hightlight a believed injustice against African American by police and challenged fellow celebrities to do the same.

The Pulp Fiction actor took to his Facebook page yesterday and challenged “all the celebrities out there who poured ice water on [their] head[s]” to sing the “We Ain’t Gonna Stop Till People Are Free” song.