Movie review - "Birth of a Nation" (1914) *1/2

I get that it's important. I know DW Griffith was crucial to film history, popularising the close up, the flashback, moving shots, etc. I know this was massively popular. And some of the story isn't bad - two families split apart by war...that sort of stuff is bread and butter for Civil War tales. But it's long. It's boring. It's racially offensive. It endorses terrorism over democracy. The first half is ok but the second half is an anti-black diatrabe and there are few images more chilling than blacks coming out of the voting booth to be met by KKK riders, then going back inside.