I attended a fans course on pyro last year, Red Faction were also invited, I don't think they attended but they were certainly involved in discussion afterwards. There were supporters groups from all over the country I remember West Ham arguing for pyro but this was after truly alarming evidence submitted by fire and safety officers and specialists in the field.
All that red smoke that wafted over the North Stand is to varying degrees, toxic, noxious and carcinogenic.
Flares and pyro cannot easily be put out, they have their own oxygen supply, cover them in sand they continue to burn, put them in a bucket they continue to burn. Put them next to human beings and large banners and they continue to burn.
The guidance now to safety officers is to allow the devices to burn out because if you intervene you could make an already volatile device even less controllable and potentially life or limb threatening. If you put one of these things into a metal pale, it continues to burn and if the incendiary device malfunctions in anyway you have just potentially primed a dirty bomb. At the course we witnessed the power of these things if they explode; people could easily be badly injured and an explosion in a metal pale could cause multiple casualties.
The message was emphatic about these devices, they are explosive, toxic, their very nature means they are not stable. In Europe, where we have all seen them on tv etc both fans and police/stewards have been badly injured and disfigured, losing fingers and hands. Holding that flare aloft could easily trigger an asthma attack in someone standing at a distance, unwittingly taking part in a spectacular but potentially extremely serious and surely very selfish action. Tragically Wales fan John Hill lost his life after a flare struck him in 1993 in the National Stadium, Cardiff. In some ways closer to home a young nonleague fan suffered an asthma attack last year from the noxious fumes given out by pyro. Who would pay the price if someone was injured or took ill yesterday?