The killing of conservative activist Charlie Kirk ignited a wave of fury on the far right, where some Trump supporters cast the murder as a political flashpoint and threat to conservative power amid a broader reckoning over rising violence. Some supporters of US President Donald Trump blamed the political left, casting Kirk’s murder as the culmination of years of hostility toward Trump’s Make America Great Again movement. On social media, they pointed to posts that appeared to celebrate Kirk’s death as evidence of conservatives increasingly being targeted. The killing of Kirk has become a potent symbol for a segment of...