1967 – U.S. President Lyndon B. Johnson, responding to a sniper attack at the University of Texas at Austin, writes a letter to Congress urging the enactment of gun control legislation.

An earlier boast for gun sales. 

and what is the surprise here? LBJ is the very one who started us down this road of socialism and those damn guns just cannot be trusted.....just look at our founding documents

I thought this one was pretty significant:

2008 – Lehman Brothers files for Chapter 11 bankruptcy, the largest bankruptcy filing in U.S. history.

https://en.wikipedia.org/wiki/Lehman_Brothers

On September 15, 2008, the firm filed for Chapter 11 bankruptcy protection following the massive exodus of most of its clients, drastic losses in its stock, and devaluation of assets by credit rating agencies, largely sparked by Lehman's involvement in the subprime mortgage crisis, and its exposure to less liquid assets.^[3][4][5] Lehman's bankruptcy filing is the largest in US history,^[6] and is thought to have played a major role in the unfolding of the late-2000s global financial crisis. The market collapse also gave support to the "Too Big To Fail" doctrine.^[7]