That's not a traditional brick at all! You kids these these days with your modern concrete bricks, why in my days, we had to dig up clay from the river and fire bricks in our own kiln before we could... Uhm... build sheds.
Makes sense, cause as an American I can confirm that throwing bricks through windows isn't a tradition here. When we're mad at someone, we simply send the police to kick down their door and shoot their dog instead.