I guess the the answer to this is much indignation, but then I'm not sure how much Reagan was hated by what passes for the left in US politics to begin with.

My God, deeply is Reagan hated by the left in America. Deeply. Though I think the current understanding goes something like this: Reagan's America is too lionized (justly or injustly) at the current moment for attacking him to be a successful strategy. Reagan's strategy of wrapping corporate greed in a pill pocket of social conservationism is more successfully critiqued from the W. Bush era, which is still fresh in the memory and proved to be the ultimate collapse of this governance theory.

It's also faded somewhat, I suspect, by the increasing willingness of Reagan's former staffers to admit that as early as 1984, they had started to cover up his Alzheimer's from the American people. He's not seen as having been entirely cognizant of his second term.

Hence you have Barack Obama notably comparing himself to Reagan at a certain point in 2007/2008 as a flag to moderate Democrats that he wasn't THAT left to give him room again Clinton in their long slog of a primary.

In any event: hatred of Reagan runs deep but you have to be in like-minded company to hear of it. I know quite a few Gays of A Certain Age who, having lived through the recession and the AIDS crisis, claim that Alzheimer's was his karmic just desserts for having failed to have acted for gay Americans for years.