The left is certainly guilty of ignoring gun or crime statistics they don't want to hear, but it's totally disingenuous to compare them to folks in the hard right-wing camp, such as fundamentalist Christians or the hardcore climate deniers.
All I know is that both of them are perfectly willing to discredit and throw science to the wind if it doesn't fit their needs. I hope the science community realizes this before they let themselves be used as pawns by politicians.