Banfield chanting against the police. The drill is the nickname for Banfield team
Lyrics
Oh, oh, oh, oh, oh, oh, We must encourage the drill, Oh, oh, oh, oh, oh, oh, We must encourage the drill, We must encourage until the death, Because I love banfield, Because it is a feeling, I take it in heart, And what matters in that photo, We have to get the police out, The b*tch who had him...