President Barack Obama, and former President George W. Bush were among those who spoke at a memorial Tuesday for five police officers from Dallas who were ambushed and murdered Thursday night.

Brent Thompson, Patrick Zamarripa, Michael Krol, Michael Smith, and Lorne Ahrens were killed after an otherwise peaceful protest in downtown Dallas.

Obama was invited by Dallas Mayor Mike Rawlings. 

The live event is over.   There are two video replay links. The first is more than 37 minutes.  The second is nearly 54 minutes.  

App users might need to CLICK HERE to see both video links on the website.