Vaclav Havel, was one of the leading figures of the Velvet revolution that toppled the Czech communist government.
He was arrested multiple times by the regime, the longest being for four years. The article doesn't make clear what he was charged with and one suspects that they are merely trumped up charges to get rid of a trouble-maker. It's not the first time that governments have done this.
Q. How many times was he arrested and under what charges?