WARREN, Michigan — The Detroit automobile worker who Joe Biden cursed at earlier this year protested the former vice president’s campaign appearance in a Detroit suburb on Wednesday and warned that many union workers do not agree with the union decisions to endorse him.

Jerry Wayne, who works at the Fiat-Chrysler auto plant in Detroit, first encountered Biden when the Democratic presidential candidate toured the automobile plant in March. When Wayne accused Biden of trying to take away guns, the former vice president snapped at him: “You’re full of shit. I support the Second Amendment.”