I think that the level of caution being practiced in the US is dropping like a rock, largely because of the civil rights protests. I wholeheartedly support the right to protest, but the image of so many people being shown on TV over and over again marching in close proximity and often arm-in-arm, sweating in hot weather, and largely unmasked, translates in the minds of a good part of the rest of the population as, "Well, guess that COVID horse has already left the barn." A huge number of people believe that it has now become pointless to continue to try to use masks and distancing to slow the spread, and that visual also presents the perfect fatalistic justification for those who already were grousing about doing it.
Me? I continue to politely wear my mask and repetitively wash my hands in public, in the hope that they are wrong.