What can I do about the "trash" Facebook keeps asking if I know?

I have been using Facebook since 2009, and until the last four months, friend recommendations which Facebook suggests (e.g. Do you know so-and-so) have been people I’ve been to High School with or crossed paths with somewhere.

But in the past four months or so, I’ve only been getting friend suggestions of people who are absolute ghetto trash—people with gang tatoos, exposed breasts, sewage-bleached hair, jail videos, gang hand-signs and images which fit the definition of porn (exposed genitalia—including one cocksucking video). Also, most of these are teenagers and I am 52 years old.

This is not a joke or exaggeration. I am really angry that Facebook is soliciting these people as potential friends and have been keeping up the onslaught of this indecent material—much of which are minors.

What can be done about this?