Not Everything Is Clear From 30,000 Feet

Austin.
This is getting bad.
This would be a good day for the president* to stop inciting violence. https://t.co/lxUUQs9FZz

— Charles P. Pierce (@CharlesPPierce) July 26, 2020

More likely the blame lies with Texas legislators and ALEC:

According to APD, initial reports said the victim might have been carrying a rifle when he approached the suspect’s vehicle. That’s when the suspect shot at the victim.

APD said the suspect is detained and is cooperating with officers. Neither the identity of the victim or suspect was released.

I presume from that the suspect thinks it was self-defence.  Open carry sucks.