direct the justice department to do a real investigation into 9/11 or risk the end of America.

Millions of people in America and around the world, including active US military and veterans know that the government under the Bush administration covered up the truth about what happened on 9/11/2001. Reference AE911Truth.org and many other professional organization websites presenting credible evidence of this fact.
If America is to survive, it is critical that our justice system functions based on truth. This is why it is critical to honor the victims of that day and the aftermath of this false flag operation that the actual criminals who committed that crime against humanity be held accountable.