Reason is the udder being not far away from the anus so literally shit happens. But there are procedures in the chain that reduce the risk. The milk is pasteurised and homogenised for this reason.
And this is exactly why i recommend raw milk to all my MAGA friends, hoping they will develop a natural resistance against being fed shit.
So like Martin Luther the Godfather of Protentantism vandalised the church in Wittenberg with his 95 theses in 1517? Vandalism by pinning the truth to a door?
While Republicans vandalize the US constitution?
Funny wording in my opinion.