OAK CREEK, Wis. – Wade Michael Page played in white supremacist heavy metal bands and posted frequent comments on Internet forums for skinheads, repeatedly exhorting members to act more decisively to support their cause.

"If you are wanting to meet people, get involved and become active," he wrote last year. "Stop hiding behind the computer or making excuses."

A day after Page strode into a Sikh temple with a 9mm handgun and multiple magazines of ammunition, authorities were trying to determine if the 40-year-old Army veteran was taking his own advice when he opened fire on total strangers in a house of worship.