Donald Trump has opened up his campaign to win back the US presidency by railing against the “dark forces” which he says are lined up against him.<br /><br />At the airfield rally in Waco, Texas, in front of thousands of supporters, the former US president called the New York City investigation into hush-money payments an expletive.<br /><br />The campaign event marked Trump’s return to a traditionally conservative state, in which he remains very popular.<br /><br />However, his decision to hold the rally in Waco - best known for an armed standoff 30 years ago - has also raised eyebrows.
