Labor Day was once the most blatantly political US holiday — created by the trade-union movement to celebrate the right of working people to bargain collectively and to stage strikes to press their demands.

The Post was an early and vigorous supporter of the movement. As early as 1836, editor William Cullen Bryant wrote: “Strike the right of associating for the sale of labor from the privileges of a freeman, and you may as well at once bind him to a master.”

New York hosted the nation’s first Labor Day parade when 10,000 workers marched from City Hall to Union Square. As the movement grew, so did the parades and celebrations.

But times have changed . Today, Labor Day is largely an occasion time for sales, end-of-summer cookouts and back-to-school preparations. Why? Because the moveme

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