Home Affairs Minister Peter Dutton has stepped up his attacks on the Victorian government, stressing he does not want to see a "small element" of the African community tarnish the reputation of others.

Mr Dutton again pointed to a "problem with some of the judges and magistrates that Daniel Andrews has appointed" and criticised people for denying the existence of gang-related violence.

"It's a complete nonsense and the fact is that there are many victims in Victoria who have suffered at the hands of these gangs and we need to call it out because I'm not, like any Australian, wanting to see a very small element of a community – in this case the African community – define the rest of the community, which is law abiding, engaged in society, working, employed, studying, whatever it might be," Mr Dutton told Adelaide radio station FIVEaa.

"The law applies equally to any Australian – to any Victorian in this case – so Mr Andrews has, I think, a lot of deep thinking to do, to firstly apologise to the people of Victoria for the mistakes that he's made which has led to the resulting violence that has taken place."