I visited DU once. I had to soak myself in laundry bleach and perform a “liberal,” amount of scrubbing with an elephant brush.
I have on occasion visited a couple of these sites, I am always amazed how so many people have EMOTIONAL arguments with no substance or fact. Unfortunately I don’t do EMOTIONAL arguments. If you should by chance make a case based on FACT and LOGIC, or even DARE to invoke the US Constitution, you will immediately be branded a RACIST,BIGOT....then you will be banned