Nearly every culture/society that has ever existed has had some variant of the swastika. it has always been a symbol of either peace, power, luck, the sun, or God. “Swastika” literally means “auspicious symbol”. One of the reasons Hitler used the swastika was because it is such a basic symbol that is pretty much ingrained in all humans; it sticks to our psyches very easily. He also used it because of its connotations with luck and power; two things he and his Reich would need to succeed.