Pomegranets and Bells

We find in the Gemara ( Zevachim 88b ) that the meil was suppossed to atone to Lashon Hara spoken in public. This is derived from the fact that the meil had bells and they would make noise - let the garment that makes noise come and atone for a sin that is trangressed with noise.

So why do we need the pomegranets ?

Lashon Hara is any statement that would make you think negatively of another Jew. We know that the positive sound of the bells would somehow cancel out the negative sound of the slander. The pomegranets were there to prevent it in the first place. The gemara teaches that even the most simple of Jews is filled with merits like a pomegranet [is filled with seeds]. If we were to internalize this - we would never say anything negative about our fellow Jews ! So even though the meil had the ability to cancel out the bad sounds with good ones - it was also there to remind us not to say them at all !