Are foreigners really taking our jobs or are we taking theirs?

Today it seems the ever popular mantra isĀ foreigners are taking our jobs. It is heard in every first world city and news headline and this fear has helped bring about historical events such as Brexit in the UK and the election of Trump in the US. However since I have moved to Singapore and started travelling the region, I have been surprised by the number of white people working in low end jobs in southeast Asia. Whilst we let the first world governments stir up emotions and convince us that foreigners are bad, it seems we also feel entitled to exploit the cheap prices and available opportunities of the very countries whose nationals we want to kick out. But is it really bad to steal jobs, or is the movement of people better for everyone?