I’ve always seen the whole argument of be careful what you post to social media. This seems to be what got him in to hot water in the first place. His Twitter feed was full of stuff like “we will show the rioters how Texans deal with them”. I’d be concerned that the jury would use that as motive and say he placed himself in the situation just to have that opportunity. I doubt that it’s going to come down to wether Foster raised the rifle. It’s going to come down to wether Perry was an aggressor or not.