A warning has been issued by the manufacturers of Danish flags:

A WELSH flagmaker last night issued an urgent safety warning to Muslims who are buying up his Danish flags to torch in cartoon protests.
Orders for the Danish national red and white flag began flooding in to Swansea-based business Mr Flag as soon as the Prophet Muhammad caricatures featured in a Danish newspaper were reprinted in Europe.
“We have experienced a rise in orders for the Danish colours,” owner Robin Ashburner confirmed.
But he warned, “It has to be pointed out though that a number of modern flags are now made largely of polyester and when they burn they melt. That means if they are whirled around by a protester, his or her fellow protesters could be splashed by flying pieces of burning material. If it got into the eye it could do serious damage so we are about to issue a warning to this effect on our website.”

Read more about it here.
(Link via The Corner)