Your only instinct is that this is a parody, but it is either extremely dark or it is exactly what it says it is. The poster is discussed at Pro-Migrant Ad: Rape Only Lasts 30 Seconds – Racism Lasts a Lifetime where it is assumed that what you read is the actual intent. One way or the other, we are dealing with depravity of the highest order. Beyond which, it assumes that the new migrant class are among the most repulsive and uncivilised people ever known. What is possibly even more striking is that even if this is a parody, it is very difficult any longer to tell.