The Wikipedia article is pretty light on details and in some cases even inaccurate. Even though only in Romania the regime change was violent, it doesn't mean that in other countries protesters were not initially arrested and/or beaten by the police/regime forces. I know this from first hand experience because I've lived in those times. In the GDR protesters were arrested and beaten. Even in Czechoslovakia a protest was crushed by the police. In Poland is was mostly nonviolent because they started to weaken the regime since 1980 mainly through strikes and worker's protests. The breakup of Yugoslavia led to the Balkan wars. In Romania people were shot dead in the street, something the wikipedia article fails to mention. You can read a more accurate description of the Romanian 1989 revolution here:
The NSF (PDSR/PSDR after that, currently PSD) mentioned in the introduction is the continuator of the Romanian Communist Party. They're the ones who siezed power and split into or infiltrated most if not all mainstream political parties. They're also the ones currenly in power. The current protests are also against them.
http://chnm.gmu.edu/1989/exhibits/unique-experience-of-roman...
The NSF (PDSR/PSDR after that, currently PSD) mentioned in the introduction is the continuator of the Romanian Communist Party. They're the ones who siezed power and split into or infiltrated most if not all mainstream political parties. They're also the ones currenly in power. The current protests are also against them.