Why are Republicans so scared of Elizabeth Warren?

Republicans can argue they are not doing anything that Democrats didn't do under President George W. Bush. True enough. After years of horrible appointments, Democrats used legal parliamentary maneuvers towards the end of Bush's second term to prevent more right-wing damage to the country. The public was not angered, because no nomination was blocked that the public was demanding. This time is different. Sure, Republicans have the right to employ the same procedural moves. But that doesn't mean the public has to sit back and take it. If Republicans are going the extra parliamentary mile at the behest of unscrupulous bankers and not the broader public, they may face blowback even fiercer than what they have suffered over their plan to dismantle Medicare.