The next test should be to drive across the border in a white Toyota pick-up filled with a bunch of dudes dressed as ISIS in the back waving their guns around. They could be yelling kill infidels while doing it for the whole effect.
The Danish - German border is basically 90%+ farmland. So of course he can walk across a "border crossing" that looks more like a forest road.
This guy and the Daily Express (a known Alt-right mouth piece these days) are nothing but idiots and fear mongering. They WANT we have high walls at all borders, because it not only keeps those dirty terrorists out, but also keeps the "loyal citizens" in.. which makes it easier to install a dictatorship.
Closed borders where people cant move over, have not existed in Europe for centuries for the most part. People have some sort of idea that "back in the good old days", borders were fixed fenced in places where people could not move over. Come on never existed.
Only time in recent European history this has been, was between East and West Germany, which required a massive border police and maned gun towers... on the East German side. The west German side was basically open. Another recent example was the Maginot line, which was made to keep the Germans out of France.. so the Germans just went around.
If you want to enter the US, go to Canada and pick some remote area and just walk over. It is easy.
Of course people are concerned. No one wants to be squashed by a Radical Muslim in a 16 wheeler. That's the second time this sort of thing has happened, and both times a lot of people were killed and injured. ISIS specifically called for their followers to make these sorts of attacks. Grunt all about fear mongering all you like; I'm not going to be caught in any large crowds this season.
"The urge to save humanity is almost always a false front for the urge to rule." --HL Mencken