I recall when Bush was seen as too slow off the mark during Katrina and New Orleans native and once DNC chair Donna Brazile (the one who later leaked debate questions to Hillary before her 2nd debate with Trump) went ballistic castigating Bush for every conceivable and inconceivable problem connected with the relief and reconstruction of New Orleans.

The usual left wing suspects were happy to pile on.  Some like Puff Daddy went so far as to accuse Bush of racism and not caring about New Orleans because it was majority black.  (How Puff Daddy squared this with Bush's billions in aid for Africa was never revealed.)

Years later, after Bush was out of office and Obama was in office, Donna Brazile apologized profusely to W. saying nobody was a stronger and more generous supporter of the reconstruction of New Orleans than George W. who "kept every promise he made to us".

Brazile, you see, already had her political advantage from Katrina so it was now OK to actually tell the truth.