This is the new normal. We can't stay in lockdown forever. Jobs deemed "non-essential" by white collar professionals comfortably working from home are pretty essential to the workers who have been stuck at home without an income.
Until a vaccine is developed, people will get sick even if they are social distancing and wearing masks and their workplaces are doing the right things. We shouldn't be shocked or outraged or self-righteous when that happens. Society needs to accept that or we will never recover from the lockdowns.