Some europeans view immigrants as a threat because

they take employment away from "natives."
they reconstruct cities
they live in the country
they increase the threat of terrorism
they dilute european culture
they create negative population growth

A , D , E

Explanation:

A Explanation: Natives of the area sometimes struggle getting employment because of immigrants having more experience than them.

D Explanation: The immigrants may not even like the choices given to them and may resort to violence to get their point across, It comes in many forms.

E. They may introduce their culture to that location and may fade out the original culture.

- They dilute European culture

- They increase the threat of terrorism

Explanation:

as many times as you want