which is a fear of strange or foreign things or people

A more proper diagnosis is xenophobia, which is a fear of strange or foreign things or people.

deep-rooted fear towards foreigners

Xenophobia is deep-rooted fear towards foreigners and this sometimes results in violence.

fear and the hatred of others who are different

Xenophobia is fear and the hatred of others who are different,” Mbeki said.

strong and unreasonable dislike and hate or fear of people from other countries

My understanding is that xenophobia is ‘strong and unreasonable dislike and hate or fear of people from other countries'.

the fear of foreigners

Xenophobia is the fear of foreigners, and foreigners is a motivating factor in many of the worst instances of violence and atrocities in human history.

The technical term for having a fear of strangers

The technical term for having a fear of strangers is Xenophobia (this term also applies to having a fear of foreigners or immigrants).

an irrational and unreasoned fear or hatred for people or ideas perceived as foreign

Xenophobia is an irrational and unreasoned fear or hatred for people or ideas perceived as foreign.