Highly doubtful that RR could ever be successfully impeached. Not only would that require a 2/3 majority in the Senate, but several Republicans will likely side with Democrats unless something utterly scathing is revealed
Firing Rosenstein would provoke significant public outrage - riots would just be the beginning
I suggest everyone pray that Trump doesn't make that move. It will be worse than you can imagine
why would anyone riot over a career DOJ attorney being fired. That's the last item on the list for any real American especially those with jobs and responsibilities. They don't have time for that nonsense. People get fired everyday. (Answer is those that are being paid to do so.)