Police from Denver and the Regional Transportation District are trying to figure out who placed racist signs on several different bus stops along Colfax Avenue.The signs were first discovered on Thursday morning and they have since been removed by staff. RTD officials wrote in a news release that the signs were made of metal and were attached to bus sign poles with rivets. RTD reported that these three bus stops at the following intersections had the signs: – Colfax Avenue and Oneida Street – Colfax Avenue and Garfield Street – Colfax Avenue and Yosemite Street The signs included language that…