It's that a prosecutor, especialy one who's fighting a losing battle, can play the "gun nut" card and support that idea by pointing at those gathered in the gallery in support of the defendant.
There was a recent trial in Waverly, Ohio that was a complete sham in which the prosecutor MORE than proved that he was willing to stoop quite low to win his case.
Attend the trial in business casual, without any outward pro-2A apparel.
I have the time, but not the funds, to attend.
Here's wishing you the best!