Why does every video start with Obama bashing video on ask.com?

Answer 1

Individual websites generally have no control over who buys the advertisements on their site. You have obviously found a site where the anti-Obama folks bought up most of the ads. On other sites, you might see a pro-Obama ad. Given how polarizing such ads are for both sides, there are some websites that refuse to run them for either candidate. Other sites need the money and accept such ads, even if they are aggravating to one side or the other.