oh buddy honestly, these people have a country, and in each country people en masse can decide the fate of given country, they can turn over political parties , overrun the army, they can do anything. 

That said, these people coming with their mobile phones, cash and fairly good looking clothes just choosing an easy way and free money from the UK, this should be discouraged. But most importantly, 

why would anyone have sympathy with people turning their back on their country and fellow citizens ? They are in good physical shape, should be home sorting matters out. I can't have any sympathy

 towards them