It's dangerous because it evokes a specific fear that's likely to inspire action. You could swap migrants and Irish in an area with a sufficient Irish populatio

It's dangerous because it evokes a specific fear that's likely to inspire action. You could swap migrants and Irish in an area with a sufficient Irish population and it would still be true. > the migrants suck Is pretty harmless, while > Keep the horny Irish teenagers away from our daughters might well lead to someone assaulting people they perceived to be Irish teenagers who were getting too friendly with their daughters.