Financial crisis of 2007–2008: The global financial services firm Lehman Brothers filed for bankruptcy while holding over $600 billion in assets, the largest such filing in U.S. history.
Three armed members of the Croatian National Resistance hijacked Scandinavian Airlines System Flight 130 in an attempt to force the release of those arrested for the assassination of the Yugoslav ambassador the previous year.
The Ku Klux Klan bombed the 16th Street Baptist Church, an African-American church in Birmingham, Alabama, killing four girls and injuring at least 14 other people (memorial march pictured).
Tanks (example pictured), the "secret weapons" of the British Army during the First World War, were first used in combat at the Battle of Flers–Courcelette in France.