This image shows the typical opening ceremony of the traditional bullfight, in this instance a parade of the various performers, including picadors, toreadors, and a matador.
The description states:
EL PASEO DE LAS CUADRILLAS
The opening parade at the bullfight.
— The bullfight is often referred to as a sport, but it is more a ritual custom of Hispanic nations and cities, as there is no competition involved. While it is still practiced today, it has come under criticism for its harm to the bulls.
This postcard likely dates from the 1960s.