Consider the belief, widely held by American conservatives, that destructive weather cannot possibly be related to climate change, but rather is God's punishment of America for legalizing gay marriage. As stated publicly by such conservative icons as Tony Perkins, John Hagee, and Franklin Graham. It's easy to passively dismiss these guys' views as fringey, but they are definitely not fringe actors in D.C. All are influential in mainstream republican politics, and all are staples of mainstream conservative media.

Perkins is perhaps the most powerful evangelical lobbyist in America, whose endorsement has long been practically requisite for repubican candidates for both congress and the presidency. Hagee leads another of the largest political organizations in the country, was an ally and confidant to the Bush white house, and is now enjoying a surge in popularity due to Trump's enthusiastic support. And Franklin Graham, nearly as famous and influential as his father.

This is just one example I picked at random. There are many, many more. I can't offhand think of a comparable example from the liberal side of mainstream American politics. The nearest I can conjur is from Britain: Jeremy Corbyn's support of the Chavez/Maduro regime in Venezuela.