They were accused before. I thought this was old news. Weren't they being accused of showing certain results to a certain demographic because the advertisers got to call the shots on who saw the ads? This is them getting charged. I think there is a distinction. Now lawyers are involved.
That's fine for some things. E.g. showing an ad for specific hair care products to black people. Not OK for housing/rental ads, credit/mortgage, etc. Facebook should have known better from the start and never enabled that kind of targeting for those types of ads.
The goal of most advertising is to change your consumer behaviors regardless of what best for the consumer. In my opinion it's a huge net negative on society.