Why we fear the “other”

Over the last year, I have seen a wave of racism and prejudice towards immigrants and refugees that I have never seen in my life time. It has always amazed me that people can sit and watch innocent people die whilst they try and escape their country to make a better life for themselves. With the executive order from Donald Trump banning entry to people from a select few countries, I want to understand the reasoning behind what appears to be selfish and evil behaviour, and work out what can be done to end it.