This answer is more of a comment on Sam I Am's answer and their reasoning for deleting the answer, since I think it's safe to discount the idea that it's some sort of Monica-related retribution.
I'm torn on this. On the one hand, I do think the answer raised an important and useful point; on the other hand I also think we need to be strict about shutting down overly partisan and/or inflammatory answers in the name of keeping this site from turning into a chaotic troll-fest; but on the third hand, politics is messy, and sometimes politicians and parties do act out of malice, racism, or other bad-faith motives – we shouldn't make a rule that requires us to assume that all politicians are honest and faithful civil servants.
So, how do we resolve this? My incomplete thinking on this is that we should have a standard that the more extreme, inflammatory or "bad-faith" an answer is, the more it needs to be supported and the more effort needs to be taken to maintain a neutral point of view and to focus any disapproval specifically on the people who deserve it.
By this standard, the original answer (without a citation) is unacceptable. The revised version, though, includes a direct quote from Nixon's policy chief saying "Yes, we did this". That's pretty good evidence, and I don't think we should delete it just because it paints Nixon in a bad light. The answer, though, spreads the blame wider than is supported by the evidence by attributing this generally to "right wing parties", and attributes additional negative motives. Since this claim is so inflammatory, the answer should be edited to be as neutrally-written, specific, and limited as possible while still getting across the main point.
So, to start, this answer should state that this is just one contributing motive; it should attribute this to Nixon and the Republican party in the 60's and 70's, not right-wing people in general; and it should highlight how this was part of a larger culture war, not just a specific act of right-wing malice.
An answer saying "Liberals want to destroy families" or "Liberals hate christians" is obviously not acceptable, but as bytebuster points out in their comment, if a specific politician did say they that they pushed a policy in order to hurt Christians (and they actually said that – it's not just something taken out of context), then that is a legitimate thing to report on. We can't just hide it because it makes someone look bad. I would have very high standards for that answer: they would have to provide good citations, keep the answer focused on the person who said it, rather than all liberals, and adopt a neural voice; but I don't think we can say that that answer should be off-limits.
So, after all that rambling, what's my position on this answer? I think it should be undeleted eventually, but it needs serious edits first. It should limit its claims to only those that can be supported by the quotes adopt a tone of monk-like neutrality in order to dial down the inflammatory nature of the answer. A more acceptable main point would be something more like "disrupting the political organization of African-Americans and the Left was a motivating factor in the Nixon administration's push for strict drug laws"