Clinton was talking about half of Trump supporters. Even taking that statement literally, that doesn't equate to anywhere near half the country. It would only

Clinton was talking about half of Trump supporters. Even taking that statement literally, that doesn't equate to anywhere near half the country. It would only be a quarter of the country if every person in the country voted and if half went to Clinton and half to Trump. But we know that more people voted for Clinton, so just because of that the Trump-supporting half would be even less than that... and yet less than that because a lot of people don't vote. Also, let's remember that Clinton said this during the campaign, when everyone (including Clinton) thought that Clinton had way more support than Trump, so she was expecting that Trump supporters were much fewer in number than they actually were. So that makes the total numbers she was (figuratively, not literally) talking about fewer still. I grant your larger point about polarization, however. It's hard to see who in the US political arena is not contributing to ever greater polarization. Somehow we need to deescalate before more serious violence occurs.