The demonstration began with a gathering at Atocha station and later the protesters marched through central streets towards Plaza de Espana.
Members and supporters of the Communist Party of Greece (KKE) and the Communist Party of the Workers of Spain (PCTE) participated in a militant joint bloc, shouting slogans in both Greek and Spanish, such as “OTAN no, Bases FUERA”, “In Greece and Spain the people demand NATO and bases to go away”, “Viva KKE! Viva PCTE!”, etc. The protesters also expressed their solidarity to the detained young communists, Mikhail and Aleksander Kononovich, who remain imprisoned in Ukraine.