What caused the shipyard riots in the city Gdansk of Poland?

The latest news aobut it.

You could say it started in the 1970s when there was an illegal strike resulting in over 80 workers killed by the riot police, this was the catalyst for the creation of the trade union Solidarity (Solidarno艣膰 in Polish). After this Lech Wa艂臋sa as he was one of the members of the illegal strike committee in Gda艅sk, he was arrested and convicted of "anti-social behaviour" and spent one year in prison.

In 1976, Wa艂臋sa lost his job in Gda艅sk Shipyard for collecting signatures for a petition to build a memorial for the killed workers and because the communists put him on a blacklist, he could not find work anywhere and had to be supported by friends and work colleagues.

After this workers were increasingly dissatisfied with their standard of living and the lack responses of the government to their calls for social justice, and when in July 1980 the government attempted to raise the price of meat even further, sit-in strikes start up again.

In August 1980, Anna Walentynowicz lost her job at the Gda艅sk Shipyard because of her position as editor of the underground newspaper Robotnik Wybrzeze, and so her fellow workers took action, so you could say that this was the reason for the start of the shipyard strikes in Gdansk.

Over 16,000 workers took action in support for Anna Walentynowicz, but this was not the real reason as many were upset with working conditions along pay, after a lot of negotiations a lot of the workers demands were met, but by this time many of the supporting industries around the shipyards were supporting the strikes and had bigger issues.

Soon after the Inter-Enterprise Strike Committee was formed in order to unite the workers in the region, consequently Lech Wa艂臋sa was elected chairman of the organisation.
It soon grew to represent over 150 companies in the area and two days later, the economy of Poland was bought to a standstill as many companies joined in, not only in the Baltic region but all over Poland.
In September after heavy negotiations with the Communist government that were allowed to be a legal organisation, but not actually a free trade union, the government still held the power.

From 1987 to 1990, Wa艂臋sa organised and led, the "half-illegal" Temporary Executive Committee of Solidarity Trade Union. In 1988, Wa艂臋sa organised an occupational strike in Gda艅sk Shipyard, demanding only the re-legalization of the Solidarity Trade Union. After eighty days, the government agreed to enter into round-table talks in September. Wa艂臋sa was an informal leader of the "non-governmental" side during the talks. During the talks, the government signed an agreement to re-establish the Solidarity Trade Union and to organise "half-free" elections to the Polish parliament.

This was the beginning of the end of the communist government in Poland, as there was no other course for them except civil war, and this was not an option, some praise General Jaruzelski the Polish leader at the time for not following this path, but that is conjecture.
So there really were no real riots and the Gda艅sk Shipyard鈥檚 and it was mainly a peaceful process thank god!!
But people were killed, I have a Polish friend of mine in his 40s now who had a gun pointed at his head by his officer and was told to drive his tank at the protesters in Warsaw resulting some peoples death, and he still wakes up at night with tears in his eyes. And I may add he is one of the nicest guys I have ever met I have met in my life.

That was in the 1970's when the workers in then-communist Poland tried to organize into unions. The riots led to the Solidarity labor movement, whose leader Lech Walesa was Poland's first democratically elected president..