The new QPR manager said he was disgusted with football's yobs and accused them of being 'filth' after fans of his former club West Ham chanted anti-Semitic songs during their 3-1 defeat at Tottenham.
Redknapp, who also spent nearly four years in charge of Spurs, said: "We don't want to go back to what we had with all the violence in the Seventies - we can't have that again.
"When they get in a group it's filth. It's disgusting and people are supposed to stand there and take it.
"They chant at managers, at players and at each other and it has nothing to do with the football. They are cowards. It's disgusting and I keep hearing it, but it's not right."