Both statements are wrong - there were many who had paid attention to the ever so small fact that the UN weapons inspectors during the fall and winter of 2002, using US-supplied 'intelligence' found nothing, nada, zip. Then there was the small matter of the German government saying that 'curveball' was not to be believed. My father-in-law, a staunch conservative, a man who was a Pioneer for Reagan and Bush (+$100,000 donations) stopped answering calls from the Republican Party in the spring of '03
There were many who initially believed the attack as reported in the media in Europe and the States was kicked off by the video
just keep on believing what you want to believe but that will never make it true.
Oh -- and to answer the question -- NO, "challenging Susan Rice does not make 0ne a racist?" However - many of those who are challenging her capabilities as a diplomat are racists