In a notable shift, Donald Trump’s campaign managers have called on Trump’s campaign staff to eschew “dangerous rhetoric on social media” in a missive sent to staff following Saturday’s attempted assassination attempt. Campaign managers Chris Lacivita and Susie Wiles wrote, “We also urge you to recognize the political polarization in this heated election. If something looks or feels off, please flag it immediately for leadership or an on-site security team.” “Please do not comment publicly on the occurrence of today,” they added. “We condemn all forms of violence, and will not tolerate dangero…