What decisions were made by all three medalists in the 1968 olympics about how they would act during the playing of the US national anthem

  All three athletes wore Olympic Project for Human Rights (OPHR) badges and the two African-American athletes, Tommie Smith and John Carlos, each raised a black-gloved fist during the playing of the US national anthem. This was the black power salute which stood against oppression of black people

from the conditions of the working class in england by friedrich engels,the main idea is :