The busiest center of Buda is the Moszkva Square. From the late 50s to '68-69, the young high school and college students who hung out here never uttered the name Moszkva. To them, it was Kalef, referring to Kálmán Széll. Later, they were also called kalefs. These loosely connected 30-40 people were not famous for operating as an organized group, but rather for their crazy love of rock and roll, listening to music, flirting, going to parties, drinking, hitchhiking, especially to Lake Balaton and Poland; yet, already in the early 60s, the Ministry of Internal Affairs noticed them, treated them as enemies, and tried to crack down hard. They did not shy away from using the most humiliating methods, their goal being to smash "Kalef".