On the Federal Law Enforcement Training Center (FLETC) website there was an active shooter training happening from June 15th to June 20th in Charleston, SC. Dylann Roof shot his victims in Charleston on June 17th. Whenever there is a false flag, there is a drill or training coinciding with it. It is happening too many times to be a coincidence.

https://www.fletc.gov/training-calendar

https://www.fletc.gov/training-catalog

 

Screenshot from the schedule:
shooter drill