For example, evolution. Not the relatively uncontroversial evolution from (common ancestor) -> {humans, apes}, but evolution within humans after this point. See, e.g. James Watson: https://en.wikipedia.org/wiki/James_Watson#Provocative_comme...
Or economics. Consider this incident in the US: http://thehill.com/policy/finance/255726-dem-economists-atta...
The only real attacks on science that get coverage are the ones attacking environmentalism or pre-human evolution. But science does (or at least should) influence politics in a lot more places.
Economic policy is hotly debated in both economic science and government. Same to immigration policy. Even statistics has it's controversial bits. Anthropologists also periodically produce some controversial nuggets. Also, let's not forget that many scientists won't hesitate to give their opinion on whatever is asked of them!
Also, their lab can be anywhere, doesn't matter. science is about the scientific process, not labcoats and microscopes.
The only scientific issue that has such a strong political element is climate change. And given that the new government in Canada is left wing and pro environment I can't imagine their being much (if any) dissension. This was the primary reason the scientists were muzzled after all. All the other scientific issues from the lay person/media perspective simply aren't that interesting.