By Scott Malone and Colleen Jenkins WASHINGTON (Reuters) -U.S. prosecutors on Thursday charged four current and former Louisville, Kentucky, police officers for their roles in the botched 2020 raid that killed Breonna Taylor, a Black woman who was in her home, in a case that sparked nationwide protests. The charges represented the Justice Department’s latest effort to crack down on abuses and racial disparities in policing, following a wave of controversial police killings of Black Americans. Former Louisville Metropolitan Police Department Detective Joshua Jaynes and current Sergeant Kyle Mea…