I’m not surprised, I’m just angry. According to Kevin Rojek, the head of the FBI’s Pittsburgh Field Office leading the investigation into the attempted assassination of President Trump, Matthew Crooks acted alone -no coconspirators- and the FBI has no idea what his motive was.
According to the representative for the “best men” the Federal Bureau of Investigation has, Crooks might have been a leftist or a far-right extremist, they are just not sure.
What the FBI does know is that no one taught or helped Crooks make complicated explosives, and they are sure he acted alone… for some mysterious reason…. that culminated in a bullet passing through the top of President Trump’s right ear.
The pretending that permeates the FBI is infuriating to me. It is almost difficult to write or share this stuff.
WASHINGTON – Six weeks after the assassination attempt against Donald Trump, the FBI still doesn’t know what motivated the shooter.
“Extensive analysis of the subject’s online search history as well as his specific online activity has provided us valuable insight into his mindset, but not a definitive motive,” Kevin Rojek, the head of the FBI’s Pittsburgh Field Office, told reporters Wednesday.
So far, he added, the FBI sees “no definitive ideology … either left-leaning or right-leaning” associated with the shooter, Thomas Crooks.
Rather, Crooks had “a sustained, detailed effort to plan an attack on some event” and considered multiple targets, according to Rojek. He became “hyper-focused” on Trump’s July 13 rally in Butler, Pennsylvania, after it was announced. Crooks fired eight shots at Trump from a rooftop that day, killing one person in the crowd, injuring two others and injuring Trump’s ear. Within seconds, a Secret Service sniper shot and killed Crooks.
There are no signs that Crooks had any co-conspirators or had links to foreign entities, officials said.
The FBI has accessed and analyzed material from encrypted email accounts he used, officials added.
[…] “We will never be able to determine exact motivation for why the subject flew the drone,” he added. (read more)
The FBI doesn’t know his motivation. 
How about just accepting, the friggin’ guy was trying to kill President Donald Trump! This is not a super challenging motive to identify.
SUMMARY – In addition to bringing explosives, a detonator, a range finder, a backpack and an AR15 rifle to the rally, while finding a way to sit undetected -on a rooftop- directly underneath a counter-sniper position, the 20-year-old without a social media footprint apparently had air superiority and was flying his drone around the venue.
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♦ […] “The 9th shot fired on J13 was from a Butler SWAT operator from the ground about 100 yards away from the AGR building. Shot 9 hit Crooks’ rifle stock and fragged his face/neck/right shoulder area from the stock breaking up. The SWAT operator who took this shot was a total badass; when he had sighted the shooter Crooks as a mostly obscured by foliage moving target on the AGR rooftop, he immediately left his assigned post and ran towards the threat, running to a clear shot position directly into the line of fire while Crooks was firing 8 rounds. On his own, this ESU SWAT operator took a very hard shot, one shot. He stopped Crooks and importantly, I believe the shot damaged the buffer tube on Crooks’ AR. I won’t be certain of this until I can examine Crooks’ rifle, but I’m 99% sure based upon reliable eye-witness ESU tactical officers who observed Crooks’ rifle before the FBI harvested it as evidence. This means that if his AR buffer tube was damaged, Crooks’ rifle wouldn’t fire after his 8th shot.” [Clay Higgins Report, pdf – page 4]