This is why Brazilians are so cool:
Police in Sao Paulo have adopted a new technique for dealing with anti-World Cup street protests by deploying officers trained in jiu jitsu, the Brazilian martial art.
Specialist police officers known as the “Tropa do Braço”, or Troop of Arms' patrolled the latest demonstration - a 1,500-strong protest in central Sao Paulo - without weapons for the first time this weekend. Instead, the 140 officers were equipped with three months of martial arts training.
All together now: Everyone was Kung-Fu Fighting!