Why do Israeli soldiers bully Palestinians?

Haaretz reported:
Why did his commanders send a soldier with a record of violence to bully Palestinians in al-Khalil ('Hebron)? The Israeli army's spokesperson’s unit chose to respond to Haaretz’s question with “no comment."
Perhaps that’s because the right answer is: Violence and bullying are what the Israel forces’ presence in al-Khalil and the West Bank is really all about.
And another right answer: The army's first mission in the West Bank is to ensure the continuation of settlement expansion, which means expelling the Palestinians from their land.
The violence of the army and the settlers serves this mission.
The proof? The hundreds of buildings in al-Khalil’s Old City that have been emptied of their owners and tenants.
The violent and bullying behavior of David Adamov — the soldier who was videotaped aiming his rifle at a Palestinian teen, setting off a storm in the media, especially the social media — was not exceptional.
What was exceptional was that the Israeli public initially believed he was sent to military prison because of his violence toward Palestinians.
By what authority did Adamov and his fellow soldiers detain several Palestinians for two hours at a military checkpoint? This incident predated that of the now-famous video. To this question, too, the spokesperson declined to respond.
In any event, soldiers detain Palestinians freely at every checkpoint and roadblock.
The robbery of the Palestinians’ time by the Israeli authorities – at every level, both military and civilian – is an integral part of the Israeli domination regime.