The dept of Homeland Security has all the info

you need to make your own IED explosives along with chemical explosives.
The unsettling dimensions of domestic terrorism surface again as an assassin targeted former President Donald Trump.

According to a report by CNN, the FBI discovered images of a Department of Homeland Security (DHS) document detailing improvised explosive devices (IEDs) on the electronic devices of the accused, Thomas Matthew Crooks.

The document, titled "IED Attack: Improvised Explosive Devices," is publicly available and provides information on various types of IEDs, their components, and the necessary amounts of explosives required to cause harm over certain distances.

As long as we have people like the young man that tried to shoot Trump and the info to make IEDs and other bombs available on the internet we are going to have this situation again.