The European Union has said the erosion of civil and political rights in Hong Kong in 2018 earned an “unprecedented” level of concern from the body’s top foreign affairs official, according to its annual report.Issued on Wednesday by the European Commission and Federica Mogherini, the High Representative for Foreign Affairs and Security Policy, the report said freedom of expression was under threat in Hong Kong, especially in regard to sensitive political topics.“[Last year] was yet another…