who did they revolt against?
the Hungarian People's Republic and its Soviet-imposed policies
Hungarian Revolution of 1956
The Hungarian Revolution of 1956 (), or the Hungarian Uprising, was a nationwide revolution against the Hungarian People's Republic and its Soviet-imposed policies, lasting from 23 October until 10 November 1956. Leaderless at the beginning, it was the first major threat to Soviet control since the Red Army drove Nazi Germany from its territory at the End of World War II in Europe.

explain 2 consequences of the hungarian uprising in 1956 The revolt spread quickly and the government collapsed.
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Hungarian Revolution of 1956 [SEP] Introduction
When the delegation's release was demanded by the protesters outside, they were fired upon from within the building by the State Security Police, known as the "ÁVH" (acronym for "Államvédelmi Hatóság", literally "State Protection Authority"). Multiple students died and one was wrapped in a flag and held above the crowd. This was the start of the next phase of the revolution. As the news spread, disorder and violence erupted throughout the capital. The revolt spread quickly and the government collapsed. Thousands organised themselves into militias, battling the ÁVH and Soviet troops. During the revolt there were violent incidents; some local leaders and ÁVH members were lynched or captured, while former political prisoners were released and armed.