While I recon people's first reaction to a "cute" robot might be positive, when it starts committing atrocities on a large scale (ie, war), I think people will start identifying the robot as a symbol of evil.

Furthermore, the past has proven that large groups of people can easily be conditioned to hate people of a specific ethnicity, country of origin, religious or political belief, or virtually any property imaginable. I don't see why this would be different for robots.