Prince William is facing criticism head on, and now, he has actually answered some of the backlash anti-monarchists say about the heir to the throne. The 42-year-old’s two-part documentary is airing this week on ITV, called Prince William: We Can End Homelessness. Last year, the royal embarked on trying to battle rough sleepers and those without permanent residence, with Homewards, a five-year program to show others how homelessness can be ended. However, much like any other public or celebrity figure, he has received criticism in his lifetime. Many anti-monarchist believers have brought up hi…