There is more chance of another galaxy randomly colliding into ours and destroying us, than there is of the LHC creating something that could destroy us. Now, I dont know about you guys, but I dont wake up each morning screaming because another galaxy could wipe us out.
Its like them doing a story saying "You could win the lottery 10 times in a row!". Well yes, there is a chance of doing so (1 in 13,983,816^10) but its not likely, and anyone that then goes out and buys a ticket just in case is an idiot. Same with this; its possibly dangerous, but tbh, its just media scaremongering.