I agree with Jake.
Walter is enclosed in a brutal society where opportunities are limited
due to the different races and colors of skin.
Although he is a citizen, he can not exercise his rights, due to the
people that block him from them.
Walter is jealous of the way the whites live and how they take it for
granted.
Walter is so ready to leave his world of envy and 'lower class'
status, that he is completely positive that his plan
of buying a liquor store will buy him out of his pitiful life.
Walter turns to his family to support him, as they live in the same
conditions as him and feels aggravated when no one cares to hear him
and understands his anger.
His frustration creates Walter to blame society and others around him.
Walter will not accept his 'fate' of being inferior to others and
encourages his son, Travis, to spend money and live happily and large
as he wants his son to get used to the life that he will provide him,
after the purchase of the liquor store.