Not only do you not understand the meaning of an Ad Hominem attack. You now demonstrate you don’t understand the meaning of “Double Speak.”
If Johnson had kicked a dog on his way out of the Staples would he have been immune to criticism and would that have had anything to do with Romney’s truthfulness? Johnson’s behavior and manners that day are subject to criticism regardless of whether or not Romney was truthful. Johnson doesn’t get a free ride on his faults just because he agrees with you on Romney.
He didn't. He exposed a leftist liar and hypocrite named Romney.