Prosecuting the Insurrectionists
The investigation into January 6th is representative of what constitutes the Republican party today: a small group of horrible people at the top, and a limitless mob of hateful idiots at the bottom.
From a legal perspective, the mob is obviously the easier target, insofar as there are thousands of photographs and videos that show these folks in action, attacking the Capitol Police and smashing their way into and through the actual building. The criminal courts are slowing processing them, and sending them to jail at the rate of perhaps one per week.
Getting at the top of the food-chain here is going to take more work, but the purging effect it will have on the country will be a thing of true beauty.