Fireworks are a good idea in another version of powder (the guy made a really cheep physics engien and then made piles of elements- the only difference being the color) someone made a missile with firworks (it actual hit the same spot each time).
oh look what i found, Its a very dangerous chemical called dihydromonoxide, apparently it is deadly when inhaled, can cause burns when skin comes into contact with the solid form, and has even been found in our water ways! I have also read that DHMO is often used as a fire retardant and that the US military has an expensive underground distribution network for it...
no, I think he knew when he was campaigning, he was just trying to get the government or an organization to ban it... they almost fell for it but found out pretty shortly afterwards