In socialism, the governing body controls the means of production and distribution. Prices, wages - everything. In every socialist government, the politicians (the people in power) skim off the top - to enrich themselves, while workers starve.
Venezuela is the most recent example. When the people voted for the socialist Maduro, they fell victim to his promise of a paradise (which Venezuela already was), and his transition from capitalism to socialism has brought about mass starvation.
Everyone who advocates for socialism should be forced to live a year in Venezuela. That would take care of the problem. Either they would learn of the horrors of socialism (the hard way), or they would die by the hand of the socialists they so revere.