Do not buy for one second that donations from unions are an equal evil to donations from corporations.
Why demonize the collective efforts to own and regulate one's own labor?
Why respect those that call another's labor their own private property, to the extent they enforce this rule through the tax subsidized violence monopoly?
Never forget where we came from.
https://en.wikipedia.org/wiki/List_of_worker_deaths_in_United_States_labor_disputes