Kim Ahern, a Democratic candidate for Rhode Island attorney general, holds a plaque she received on her final day as a prosecutor in Peter Neronha’s office. Neronha has endorsed one of Ahern’s opponents. (Screenshot/Kim Ahern for Rhode Island)Kim Ahern’s latest campaign ad in the four-way Democratic primary for Rhode Island’s next attorney general begins with her reading from a plaque she was given on her final day as a prosecutor in 2019. “Your…