Below is the evidence we found floating around social media. It looks like the terrorists arming rioters trace back to a Soros-backed NGO called the Bail Project. Reportedly the U-haul was rented out by Holly Zoller of the Bail project, and reportedly driven by Corey Lemley. Click on the images to enlarge.
While scouring Antifa Telegram channels, we came across the below video. It appears this U-Haul was rented for the sole purpose of arming rioters.