During Austin FC’s home game last Saturday, fans in the supporters section wore all black and carried a banner that read, “No ICE in this melting pot!”The overpowering sound of La Murga — a supporter group that also functions as a brass and bass rally band for the team — blared throughout Q2 Stadium. But a few minutes into the first half, the music stopped, the band put its instruments away and those same rowdy fans walked out on their team. Joining La Murga in protest were fellow fan brigades Los Verdes and Austin Anthem.Together the groups protested Austin FC’s...