I guess the way that would work would be that the accused would be presented with some kind of a oath or creed, and if he swore by it, he would be pardoned provisionally, likely deferred adjudication.  However if there had been evidence of the accused doing bad things, then yeah, he'd have to go before a jury.

Now that jury, they'd all have to be checked out to insure that none of them were overt or closet deniers - as well as the judge, court reporters, and the bailiff.  You just can't be too careful these days.  The exact meaning of "Denier" would have to be codified and reduced to the proper belief set, and this agreed upon by the relevant committees.

I think when we were done setting all this up, it would be quite interesting.  You know, a lot of those SWAT teams are worried they won't have any work as more and more states legalize marihuana.  I can see where they could swoop in, when an informer ratted on a Denier.  There could be a cell phone app for Denier Reporting.  The NSA would be glad to help out.  Something to help them get a good public image.  Doing good work, you know.  Or maybe not.  Maybe we couldn't trust the people in the US - it'd be better to bring in international cops, observers and enforcers.

I have to admit to being a bit worried about this plan.  Not because some innocent people could die, after all it's all for the planet.  But what if we missed some of the Deniers?  You know, sort of like the Racists that don't even know they are racists, and don't say or do anything racist, but actually are racist? 

Hey saving the Planet's a tough job, but somebody's got to do it.