Some people are critically supporting Russia against the US/NATO (iirc this is the /r/genzedong party line). A much smaller group go further into full support of Russia out of the misguided belief that this is a black and white conflict, where "NATO bad" must mean "Russia good".

As Thomas_Dankara says, however, these allegations are mostly being thrown at anyone who so much as says "Hey maybe NATO isn't the good guys".