Unless you are telling the truth about Donald Trump; then you might get sued by Trump. Trump tried to sus the lead plaintiff in his Trump University scam for defamation in an anti-SLAAP lawsuit. In the end, Trump had to pay the woman's lawyer almost $800,000 in legal fees.
For all his bluster, I haven't been able to find a single defamation lawsuit Trump has won, but he's lost a bunch of them.
Link please.