Swedish Tea-Partiers FOR SURE, supported by heroic security guards.
And a plumber with a questioning attitude.
I feel certain of this.
It could also have been a group of 80-90 year old Christians on a pilgrimage. S/
The good news sor far is no one shot with a legal gun. Now the morons in Ma can work on anti bomb laws to save them.
All explodable chemicals must be banned, including gasoline, fertilizer, pool chlorine and coffee beans (I hear they can explode. Don’t ask me how).