Without personally identifying details or a detectable Russian accent, it is utterly impossible to distinguish a Trump supporter in such a way that someone won't mistake them for a Russian troll or shill.
"Russia is our friend, and Trump is a friend to Russia. Vladimir Putin is a strong, honest leader who should be respected. Putin has done nothing wrong because Putin said so!"
Is this guy a Trump supporter or a Russian shill? I can't tell. I call Mikhail's Law!