I understand what you mean and in a way you're right, but imagine, this event had a another purpose as well, which was recruiting. There were tents where military personnel was explaining how the military works, what to expect and also offering brochures to those who were interested. How else can you recruit if you don't let the population close to what the military means.
You should have seen the school kids, you had no rook because of them 😂. For them it was a huge playground.