If respondents have the perception their country takes in too many immigrants
Pretty much any right wing party in the Netherlands lied about the number of asylum seekers. Then they purposely mix up the number of immigrants and asylum seekers. Plus asylum seekers are the latest group to be blamed for government failures.
People are giving significant tax benefits for work immigrants. But give them a different name (knowledge workers), so they can continue to pretend most immigrants are asylum seekers. While in reality asylum seekers make up a tiny portion of the immigrants in the Netherlands.
If I see stuff about immigrants I'm always suspicious. Likely the complaint is about asylum seekers and equalling every immigrant as an asylum seeker.