<p>The television station has received many complaints about the clothing advertisements, which some viewers condemn to be tasteless. no error</p>
<p>The answer is to be. I was wondering if someone could please explain to me why that is wrong?</p>
<p>its supposed to be "which some viewers condemn AS tasteless." If you think about the sentence idiomatically, if you condemn something as tasteless, you are condemning it for this reason. Contrarily, if you condemn something to be tasteless, you are expressing disaproval at it and declaring that it should be tasteless. It's hard for me to explain my thoughts fully, especially in the latter case, but you will probably notice that using "as" sounds better in this context.</p>
<p>^perfect justification.</p>