That's not a silly, goofy time. It's a tense, reactive, and hostile time and environment.
Don't listen to this meme. It takes a lot of planning and execution to blow up any target, regardless if you're the US Military, or some freedom fighting militia.
sugar into a concrete mixer and prevent construction and such
I used to work for a concrete precasting plant. A single 20oz bottle of coke will ruin ten cubic yards of concrete easily.
But it's even easier than that. You can spray forms/reinforcement with soda before the concrete is even poured, and it will ruin the pour because the concrete won't bond to the reinforcement.