Chewbacca, a number of men involved in the trafficking and sexual exploitation of vulnerable white girls did make money from it. Other men paid to have sex with these girls. The older girls who had already been damaged by their involvement, were used to bring in other younger, girls and it seems, given cash ( very small amount) for doing so.
These are cultural issues. Most of the men involved in the recent well publicised child sexual exploitation trials have been Muslims. Some have been well known in their mosque and community as "respectable" people. Some have been counsellors or community leaders. Many have not been practicing their faith in that they drink alcohol, take drugs and commit crime.
The travelling community does indeed travel. It's a key part of their cultural identity. They may be housed and often are but they will share a trailer with extended family and often travel from June to September, with children missing school as a result.
All the travelling families I know are from the Roman Catholic faith. They have lavish ceremonies for things like Christenings, first communion and weddings . It's also true that some families are well known for specific criminal activities, well, some branches of families. Others are more law abiding and more integrated into their local communities.
Domestic violence is generally a crime committed by men, but some women are horrifically violent and controlling. Same goes for child sexual abuse, mainly a crime committed by men but some women are perpetrators.
We have to be able to tell it like it is. It isn't true that no travellers travel, it isn't true all Catholics are crooks, nor is it true that all Muslims are involved in exploitation of vulnerable young white girls, or jihadi's. That doesn't mean we can't and shouldn't discuss the prevalence of some communities in particular crimes.
Door men anybody - drug dealing part of that work, yes it often is but not always.