Perhaps this was the first sign of a boy who would indeed grow to become the incredible man his was known as these many years following his death. ... It had been a way out of poverty for Martin Sr. and as a schoolteacher it was equally important . ... The store clerk refused to serve them unless the took a seat at the back, to which Martin Luther King Sr., stood up proclaimed "We'll buy shoe sitting here, or we won't buy shoes at all" and stormed out . ...