Grasping at straws there Mr P.I.
The reason for the Volendam tragedy ( 21 years ago) was because all but one of the emergency exits were blocked !

Locked doors do not start fires.
I suspect most UK citizens also lock their doors, judging by the crime levels reported there.

The DM don't need to bother trying to reduce the population. The government has that particular task in hand.

What actually happened :
The fire took place in a building that housed three bars. On New Year's Eve the cafés were packed with more than 350 young people between 13 and 22 years of age when a short blaze happened in the café De Hemel ("Heaven") which was located on the top floor after a sparkler hit Christmas decorations that hung from the ceiling. The temperature in the room reached 400 °C (752 °F).

There was great panic and the heat, lack of oxygen and people falling over each other made escaping extremely difficult. There also were bars in front of the windows and there were too few emergency exits, all of which contributed to the high number of injuries. Survivors stated that shortly after the fire began all the lights went out contributing to the panic.

A bit different to a few festive decorations to brighten up your home in the Winter ?

The original :
De directe aanleiding was een pakje met sterretjes dat om half een werd aangestoken. Het pakje gaf een steekvlam en door de schrik werd deze omhoog gehouden tegen de volledig uitgedroogde takken. Doordat de kerstversiering niet geïmpregneerd was met een brandwerend middel vlogen de kerstboomtakken meteen in brand.

De brandende massa kwam naar beneden in het overvolle café, en veroorzaakte een felle korte brand waarbij de temperatuur opliep tot 500 graden Celsius met veel rook. De kerstverlichting smolt waardoor kortsluiting ontstond en het licht uitviel. De brand doofde door zuurstofgebrek binnen drie minuten.

The fire was out in Three minutes!