For many Americans, September 11, 2001 marked the end of innocence in our country. There are many who were too young to remember or to recognize the magnitude of what America just experienced. (Watch it live like America did here.) By the time everyone was accounted for, nearly 3,000 people died.

While today’s news is dominated by Democratic presidential candidate Hillary Clinton’s “episode” at the 9/11 Memorial Service, it shouldn’t be. Today is a day to be angry that we were attacked for embracing freedom. Today is a day to mourn the dead and celebrate the heroes of that day.

When we say we must never forget, we don’t mean just those we lost. We must never forget the horror of watching on perhaps even live TV a second plane hit the World Trade Center or the wave of nausea we felt when the towers collapsed, knowing so many were still trapped inside. It is important to remember, too, because we must remain vigilant against acts of terrorism on our soil and abroad.

The below offers some of the more poignant images and footage from 9/11. There are swear words and graphic images. And if it offends, good. This act of terrorism on U.S. soil should offend every American and anyone across the world who values life.

God bless the victims and their families. God bless the U.S.A.