I have an Egyptian co-worker who argued that no slaves were used while building the pyramids (let's say the great pyramid at Giza to be specific) - is it just an idea that has been introduced to current society "through the bible" as he puts it, or is there actual evidence?
While there's always room for more discussion, there is a section of the FAQ dedicated to the building of the pyramids, including questions about slavery: Building the Egyptian pyramids.