No one says that, you are being intellectually dishonest.
From this point, I'm going to assume that you were in a stasis chamber during the last election run-up.
Using "Democrat" as an adjective is a Republican smear campaign that is partly perpetuated by Fox News
I assume then that you don't have any qualms with the constant use of "Repbulican" as an adjective on MSNBC and the endless claims of all republicans being rich old white men... and the unceasing claims that being white men makes them automatically evil.
No, I'm not being serious.
I think I'll stick with my BBC News thank you, I like their proper British matter-of-factly way of telling the news and outside looking in approach to US coverage.