organize their workmen . . . into an organization of the said
combination known as The United Hatters of North America, or, as the
defendants and their confederates term it, to unionize their shops, with
the intent thereby to control the employment of labor in, and the
operation of, said factories . . . and to carry out such scheme, effort
and purpose by restraining and destroying the interstate trade and
commerce of such manufacturers by means of intimidation of, and threats
made to such manufacturers and their customers in the several States, of
boycotting them, their product and their customers . . . until . . . the
said manufacturers should yield to the demand to unionize their