After reading Game Changer, the book that is virtually just covering the democratic primaries it's clear that there were a lot of issues with her 2008 candidacy, the arrogance of her entire campaign and her expectation that she'd get endorsed by the big guns-let alone her comments comparing Obama to Bobby Kennedy which is low remark considering she held RFK's seat.
That was a bulls**t controversy. She at no point suggested Obama was going to be shot or she was staying in the race in case he got shot. She was asked by a reporter why she was still in the race, and she pointed out that past primaries
always dragged into June -- two examples she cited were '92, when her husband and Jerry Brown contested the CA primary, and '68, which, she mentioned, everyone remembers because of the association with RFK's death. That was it. The media, including many liberals, were trolling the Clintons full-time by that stage, so they took that and blew it up to "Hillary: I'm hanging in in case the black guy gets shot." I think even in
Game Change, it's sort of acknowledged that this was unfair.