While fireworks are beautiful and exiting and loved by all of us , the explosives involved are full of heavy metals that are accumulative in the bodies of unsuspected spectators causing severe health damage  leading to  different types of cancers and diseases affecting animals and humans alike, not to mention animals go on shock because of the high sensitivity they got to noise and some of them fret severely and some causing infart.                                                                                 I propose a restructure of the system to a just as enjoyable but safer alternative for all of us like perhaps laser and or water  shows with music instead or something alike..  is a question of putting on our thinking cups and resolve this pressing issue ASAP