These are just pranks made by 4chan and their ilk.

The circle of life on this sort of thing, I think, goes something like:

Come up with a contrived reason milk could be considered racist, film a video or whatever about chugging milk while making a racist screed, get criticized for being a weirdo, and then some reactionary clickbait site can have the headline "Internet user called 'racist' for drinking milk."

It is dumb, don't worry about it.

Didn't 4chan also create the OK hand sign racist as well? Now there are people who genuinely believe the OK sign is racist.

It is essentially the same prank, I believe the milk one is the even more absurd followup.

They spread the rumor that the OK symbol is racist.

Some people go to racist rallies and make the gesture.

Is it now a racist gesture? A gesture can't really be racist I don't think, it is the intent behind it. In the case of OK, it doesn't provide much extra information, right? If somebody is making it at a racist rally I guess it is a bit redundant. If somebody makes it while scuba diving I guess they are really indicating "OK."

The OK gesture was an effective pick because, it has mostly been supplanted by thumbs up to indicate all's good anyway. So it doesn't have much counter-pressure. I don't think milk consumption is going anywhere.

While intent should be what matters, that isn't the case for many people. There was a man who was cracking his knuckles and somebody took a picture of him. Apparently his hand was close to the OK sign and he was fired. It is getting to the point where intention does not matter.

https://www.nbcsandiego.com/news/local/sdge-worker-fired-ove...

People of European decent tend to be much better at digesting milk (lactose) as adults and there's a meme that if you can't chug a bottle of milk you have to get out. Or something silly like that. Turns out groups of people with ancestry in east Africa have the gene for lactose as well.

So, milk could become a symbol of this if used within that context. People are paranoid enough today that if a picture of someone enjoying a glass of a milk was published, they could assume it was a signal of this. And it could be, to be sure.

Apparently? Here's an article titled "Milk, a symbol of neo-Nazi hate" published "August 31, 2017" (not April 1):

https://theconversation.com/milk-a-symbol-of-neo-nazi-hate-8...