回复：回复：言论自由. 左当权时, 是没有的, 要被杀头的.

I know lot.
when I was a child,in our school some children wrote "Revolution" slogans on wall. They just made some writing mistake. The children were put into jai for a few months.The teachers were fired.Such thing happened a few times.
One of my classmate in middle school was put into jail only for listening the progarms from Taiwan.