A critic is supposed to assess a film completely based on its quality, putting aside all of their prejudices and biases. The general film audience doesn't have this obligation, and frequently they rate a film in black and white; they defame on social networks, or praise beyond what it deserves.
A scarce number of select audience members may understand the true potential of such a film because of their expertise on that special area, and a lucky film could later be reevaluated and reappraised to achieve a cult following, which is the case of many films.
Again, art is subjective. One person's masterpiece is another's trash. The social conditioning, stratum, and exposure has more to do with it. A person can't be expected to understand all the façade of life. The political atmosphere also plays a huge part in determining the fate of a film. This list concerns such divided films whose original intention was misunderstood by the viewers for some reason.