President Donald Trump seemed to signal a willingness to ease tensions in Minneapolis after a second deadly shooting by federal immigration agents. But there was little evidence Wednesday of any significant changes after weeks of harsh rhetoric and clashes with protesters. Trump made a leadership change by sending his top border adviser to Minnesota to take charge of the immigration crackdown. That was followed by seemingly conciliatory remarks about the Democratic governor and mayor. But on city streets, there were few signs of a shift. Immigration enforcement operations and confrontations with activists continued in Minneapolis and St. Paul.