Czechoslovaks carry their national flag past a burning Soviet tank in Prague. In 1968, a period of political liberalization in Czechoslovakia called the Prague Spring took place that included "Action Program" of liberalizations, which described increasing freedom of the press, freedom of speech and freedom of movement, along with an economic emphasis on consumer goods, the possibility of a multiparty government, limiting the power of the secret police[178][179] and potentially withdrawing from the Warsaw Pact.[180]