They offer up quotes, often taken out of context.
They will even chop up what someone says into bits and pieces, which can alter the meaning of what was actually said.

I prefer to listen to the full and uncut interview of the person in question (in this case Mamdani) and then compare what he says to how he has actually voted on issues, what he has actively supported and what he has done.

He is an unknown to me right now, so at this point in time I take a neutral position.