Part of the Olympics opening ceremony in London on Friday night was a tribute to victims of the terror attack of July 7th, 2005 that killed 52 people.

But if you were watching the show here in the U.S., you didn't see it . . . because NBC cut away to an interview between Ryan Seacrest and Michael Phelps.

In response to the backlash they got, an NBC spokesman said, quote, "Our programming is tailored for the U.S. audience.  It's a tribute to [producer] Danny Boyle that it required so little editing."

Here's what NBC didn't think you needed to see: