Oh, so you don't have any concrete examples. Try to find some, the experience might teach you something.
Edit: on re-reading, that sounded way snarkier than I wanted. What I mean is, actually do the exercise of trying to find quotes of scientists playing politics. It's not as easy as you seem to think.
"James Hansen". Pretty much anything he's ever said in public. No, it's not hard at all. It's hard to find a scientist's name in the (conventional) media who is not playing politics. (In this case I don't include the explicitly-science section of the papers. There you get your choice of either a journalist playing politics with science or a journalist not understanding what they are writing about, or both, but that's not the scientist's fault.) You think it's hard because we've become so used to it you can't see it anymore but scientists do hardly anything but make ought statements instead of is statements anymore.
Edit: on re-reading, that sounded way snarkier than I wanted. What I mean is, actually do the exercise of trying to find quotes of scientists playing politics. It's not as easy as you seem to think.