Probably this is unanswerable, since we can't ask him directly, but it is evident that he hated a variety of groups who he either disagreed with or for racial reasons. Essentially his philosophy, which made every and any method acceptable in its achievement, was full of hatred for particular groups such as Jews, Jehovahs Witnesses, Gypsies, the Wends and other slavic minorities in Germany - essentially anyone who he believed was a hindrance to his goals. Some Christian groups such as the confessing church also were imprisoned and some, like Bonhoeffer, killed.
Who or what was there to stop him?
To make no jews in the world, and hitler hated them because they were smart and brave, etc.
Hitler did not understand the Jews or know any Jews, so he was terrified of the Jews, which caused him to hate them and scapegoat them for all of the problems in the word.
Hitler did not really convert Germans to hate the Jews. Germany was already an anti-Semetic society when Hitler came to power and therefore, it was easy for Hitler to convince Germans to go along with his plans for Jews.
Because Hitler and the rest of the Nazis blamed the Jews for losing WW1.
The Jews were the target of Hitler's hate campaign.
maybe
Who or what was there to stop him?
Because Hitler blaimed the Jews for the tragety of World war I.
No, and Jews did not kill his mother.
Yes, their families were getting killed by Hitler's servants. Why wouldn't they hate him? :)
You will have to ask them about this one.
Not any more; he is dead.
No. Hitler did not arbitrarily hate all people with the name "Jesse".However, if this is intended to ask "Did Hitler hate the Jews", please see this Related Question.
To make no jews in the world, and hitler hated them because they were smart and brave, etc.
Hitler hated Jews because they loved God, and Hitler hated God, as he showed by his life.
Hitler's mother did not influence him to hate Jews.