Far right means hate extremists more than anything. As in, you can't call them nazis or racists until you have proof you can take to the congress (?) to get the party disbarred.
I agree with you in that you can't have open borders, but I would definitely use different criteria than religion and skin color, just because they are more visible. Maybe use scholarity and labor requirements instead?
That is just my head. But beside the word used, if you think your WORST problem is "mass immigration", you should pay less attention to politicians.