Reddit has special code to discriminate against /r/The_Donald. Without that special code, /r/The_Donald would still be all over the front page.

Sometimes the truth leaks out, for example in the interface that advertisers use. The number of subscribers listed there was over 6 million, far in excess of what a normal reddit user would see. In various ways, inconsistencies reveal that all the numbers are being manipulated to suppress /r/The_Donald.