In the 1960s the first Marks & Spencer store in Central Asia was built in the city. Kabul Zoo was inaugurated in 1967, which was maintained with the help of visiting German zoologists. Foreigners flocked to Kabul and the nation's tourism industry picked up speed. Kabul experimented with liberalization, notably the loosening of restrictions on speech and assembly which led to student politics in the capital. Socialist, Maoist and liberal factions demonstrated daily in Kabul while more traditional Islamic leaders spoke out against the failure to aid the Afghan countryside. From the 1960s until the late 1970s, Kabul was a major stop on the famous Hippie trail. By the beginning of the 1970s, Kabul became known for its street sales of hashish and became a major tourist attraction for western hippies.