Red or blue15 May 2019 13:29
Just for info ... MMs do not mark trades as buys or sells.
This site (along with many others) categorise them that way depending on whether the trade price is above or below the mid price at the time the trade was executed (not necessarily the same time as it was reported).
That's not to say MMs dont manipulate the buy/ask, and hence the mid price, but they dont actually mis-report the trade.
The buy/sell indicator is not official and should not be taken as gospel.