Updated

Thousands have joined marches through central Athens to commemorate the 40th anniversary of a bloody student uprising against the then dictatorship.

Previous marches have been marked by riots, but as of early evening Saturday's appeared to be peaceful. According to police estimates, about 10,000 mostly leftist, anarchist and union supporters have joined one march and a similar number of Communist Party supporters are marching separately.

Both marches are set to end outside the U.S. Embassy, about 3.5 kilometers (2.2 miles) from the National Technical University of Athens, the center of the 1973 revolt. Most Greeks still blame the U.S. for supporting the 1967-74 military regime.

The revolt was crushed when a tank stormed through the University's gates in the early hours of Nov. 17, 1973.