Activists worldwide will march in May Day rallies today, demanding peace, higher wages, and better working conditions. Many workers are grappling with rising energy costs and shrinking purchasing power, tied to the Iran war . The day is a public holiday in many countries, with demonstrations, some historically violent, expected in major cities globally. The European Trade Union Confederation (ETUC), representing 93 trade union organisations in 41 European countries, stated: "Working people refuse to pay the price for Donald Trump’s war in the Middle East ." They added: "Today’s rallies show working people will not stand by and see their jobs and living standards destroyed." In the United States, activists opposing Donald Trump’s policies are planning marches and boycotts. Here’s what to know about May Day. Rising energy prices and living costs Rising living costs linked to the conflict in the Middle East is expected to be a key theme in Friday's rallies.…