Many lives where taken to ensure that harry would in the end defeat lord voldemort, they did not die in vain and they will always be remembered.
Albus Dumbledore, Mad-eye Moody, Remus Lupin, Ted Tonks, Nymphadora Tonks, Lily Evans, James Potter, Dobby, Crabbe, Hedwig, Fred, Sirius Black, severus Snape, Colin creevey