First the Tea Party went on a political purge. they labeled Republicans as "RINOs" and set about purging them from the party (Richard Lugar we hardly knew ye). They are still hell bent to get the candidates who fit their narrow template of ideological purity and will soon enough control the Republican Party. These are the same folks, incidentally, who shout about the Democrat Party being hijacked by the Left Wing.
But politics aren't a wide enough canvass for the Right Wingers to be content with. Now they are arbitrating who is ecumenically pure as well. They will purge with the same zeal any heretics, blasphemers or any other citizen who does not conform to their interpretation of scripture. This in spite of the fact that American society is secular and not encouraged to believe in any faith established by the state, no matter what that pesky 1st amendment says.
So, like the Taliban, the far Right wants to establish a religious litmus test. They want to label anyone not in line with that test as anti-American, the same label the Taliban imposes on those who disagree with them.
And like the Taliban, the far Right leans on an extremely Conservative interpretation of true faith.
The only differences between Right Wingers who seek the base alloy of their ideology and the Taliban is tactical. So far, Conservatives have not been violently attacking apostates, with the exception of doctors providing abortions (why haven't Conservatives stepped up to, and I'll use a Right Winger's term here, refudiate the actions of those evil zealots?)
But, just as the McCarthy era witch hunts did, Conservatives will deem an American citizen who does not fall into line with their narrow template as anti-American.
It's a weird wonderful world for the Far Right. Since the end of the Cold War, they floundered around looking for another enemy, because without an enemy, their ideology falls flat. Well, they have met the enemy, and they are us.