FeaturedMercerMe Archive Mercer County Spearheading Campaign to End Mental Illness and Addiction Stigma by MercerMe Staff July 2, 2018 by MercerMe Staff July 2, 2018 Mercer County Spearheading Campaign to End Mental Illness and Addiction Stigma. MercerMe has joined the Mercer County Campaign to End Stigma by signing the pledge and sharing this important message.