You can tell how crap the arguments against staying in the EU are by the way UKIP has to appeal to xenophobia instead of facts.
Talking of facts:
Millions. One might hope that errors of three orders of magnitude would be uncommon on Slashdot.
The UK is a major offender with GCHQ, but our government has been shamingly successful in closing down debate on the issue compared with what's happening in the US. The main response from our wonderful government has been to threaten the Guardian. This in a country where (happily) you still don't risk life and limb by opposing the government. The sad fact is that people here don't care about their freedom as much as Americans do.
As I often point out to the pretty numerous people I meet who object to some new lunacy in American politics - you may complain about this, but whatever you think about [whatever], be sure there are Americans who care just as much about [whatever] and are actually trying to do something about it.
But I have to say, in the many countries where leprosy hasn't gone away, there are still plenty of very real, non-metaphorical leper colonies. I know because I'm an eye surgeon who used to work in Africa, and I've been involved in outreach trips to operate on cataracts in leper colonies. If we hadn't arranged the trips, the people would have had no chance of getting their sight back. Nobody much cares about them.
Find another bloody metaphor.
A: Why do Bulgarian policemen always go around in threes?
B: Dunno. Why?
A: One knows how to read, and one knows how to write.
B: What's the third one for?
A: He's keeping an eye on the two intellectuals.