In order to back that up I'll have to explain what socialism means, and the character limit of these textboxes won't allow that. The core of socialism is though that everybody gets a fair share of whatever is available. Denmark and the other countries have special systems that make sure that people who can't work or who are between jobs will get compensated so that they can still eat a good meal when they are out of their luck. Not that this system is perfect, but it's completely in line with the socialist philosophy.
In Venezuela everything socialism stands for is being violated. People are starving not due to lack of available food, but due to all money going to the leader (which is completely against the socialist philosophy) and the president has tasted power, and lusts for more (forgetting the socialist ideals he may once have believed in himself). Everything for himself and not caring for those who didn't do so well (basically one of the core elements of capitalism, but taken beyond the extreme). Why do you think this is called SOCIAL-ism and not ANTI-SOCIAL-ism?
I live in a country myself that is very much in the same league as Denmark, Sweden en Norway, although the systems in the countries I just mentioned are better than in mine. Sweden is also said to be the country with the highest taxes in the world, which may be a pain to rich people, but in the same time Sweden can therefore give all citizens a fair share (or at least, that's the idea).
Don't think that socialism can ban out all poverty, as there are factors no system can fully influence. Still socialism was invented to prevent exactly that what is happening in countries claiming to be socialist (like Venezuela) and I can imagine that Denmark does not want to be compared with them and uses denial to prevent it.
So the bottom line is... If socialism is fully executed the way it was originally intended then nobody should be worried about having to miss a good meal. That is the core essence of it.
Its achillesheel is however that it requires a leader who can uphold that system, and who can deal with power responsibly and that is where it went wrong and when power corrupts, even socialists can forget the ideals they stand for. But capitalist or communist. People with power use that power, and quite often not for the better.
So it's not socialism that's the problem. It's the fact that power corrupts and that some countries just have a pretty weak political system. No system survives that