I think that, some men, regardless of what ethnicity or race they belong to, and their criminal history [or lack therefore of], will take advantage of some women with low self esteem, as sad and wrong as it is. If they lack strong men in their life, to screen these potential husbands, then it's worse. This is perhaps one of the reasons why in Islam, a marriage is NOT valid without a Wali/Guardian, because women are emotional and may marry a man for emotional reasons while disregarding some important things, while her father, brother, or uncle, if he has a good head on his shoulders, will not be emotional when screening the man/questioning him; and will thus be more able to see if he'd be a decent/good choice for their sister/female family member.