This was charged as a misdemeanor. No grand jury this time.

I'm on the protestor's side here, but in general, it probably ought to be illegal to throw sandwiches at people. Some jurisdictions have a separate offense of harassment for offensive or even merely nonconsensual intentional physical contact that presents no risk of injury.

I'd have voted not guilty if I was on that jury, but guilty for the same conduct under different circumstances, such as throwing food at a fast food worker over a customer service issue.