2010 Event At least 40 people are killed by a bomb blast at a solidarity rally with the Palestinian people in Quetta, Pakistan 1989 Event Solidarity grants legal status in Poland 1985 Event Polish police arrests 7 Solidarity leaders 1983 Event In Warsaw, police route 1,000 Solidarity supporters 1982 Event Polish Solidarity chairman Lech Walesa freed 1982 Event Solidarity leader Lech Walesa is let out of jail in Poland 1982 Event U.S. imposes sanctions against Poland for banning Solidarity trade union 1982 Event Poland bans Solidarity and all labor unions 1981 Event Polish government declares martial law, arrests Solidarity activists 1980 Event Poland acknowledges Solidarity union 1980 Event Polish government recognizes Solidarity 1980 Event Polish government legalizes independent labor union Solidarity 1980 Event Solidarity labor union in Poland forms 1980 Event Poland's Solidarity labor union forms 1980 Event Polish government recognizes Solidarity 1978 Event U.N. observes "international day of solidarity with Palestinian people," boycotted by U.S. and about 20 other countries 1968 Event 50,000 participate in Solidarity Day March of Poor People's Campaign 1943 Birthday Lech Walesa, born in Popowo, Poland, leads Polish Solidarity, Nobel 1983 1913 Birthday Wladyslaw Sila-Nowicki, Poland, lawyer, Solidarity