Celebrity scientist Neil deGrasse Tyson — known for lambasting climate change skeptics and indicating during the 2016 presidential campaign that Jesus would vote for left-winger Bernie Sanders — tweeted a greeting to "the world's 2.5 billion Christians" on Christmas Eve.

Sounds OK so far, right?

Well, apparently not content with leaving his "Merry Christmas" greeting as is, in the same tweet Tyson added a wish "to the remaining 5 billion people, including Muslims Atheists Hindus Buddhists Animists & Jews ..."

His message to them? "Happy Monday."

Calling Tyson's tweet a "backhanded slap" at Christianity, conservative commentator Ben Shapiro took him to task in a piece for the Daily Wire: