Remember remember the fifth of November, Gunpowder, treason and plot. I see no reason why gunpowder, treason should ever be forgot.....

I do not want to put a damper on tonight's festivities, enjoy your bonfire and lots of exciting fireworks.  

However, I think that it is also important to remind ourselves, and remember, that the Gunpowder Plot was as a result of intense religious persecution of the Roman Catholics, which started during the reign of King Henry VIII. 

courtesy Sam Roberts via wikipedia

There was religious persecution on both the Catholic and the Protestant sides. 
Thank goodness, that today we have laws against this type of discrimination.