His base in unbothered because they have a need to see him "sticking it to the ...." and then you fill in the last part.  Ever since Nixon, the Republicans have made it their job to create as much resentment as they can in the country.  In this way, they take people's attention away from wars, misdeeds, and the fact that benefits for those in need are being reduced, while tax benefits for the very wealthy are being increased, and that regulations are being cut, thereby increasing harm for the general public and making life more wealth-producing for the very wealthy.