On this day in History - June 3

1935 – One thousand unemployed Canadian workers board freight cars in Vancouver, beginning a protest trek to Ottawa.

1965 – The launch of Gemini 4, the first multi-day space mission by a NASA crew. Ed White, a crew member, performs the first American spacewalk.

1989 – The government of China sends troops to force protesters out of Tiananmen Square after seven weeks of occupation.