It's Ramon. Do you remember how many times President Bush, 43, ridiculed President Obama after Obama took office? Of course you don't, because 43 never did it. It should come as a surprise then (or not) that Obama has broken the precedent and has slammed President Trump a dozen times since Trump has been in The White House. Here's a list of those times:
January 2017 — Obama bashes travel ban
Obama was out of the White House just 10 days before he took a shot at his successor. Obama criticized Trump on Jan. 30 over the president’s travel ban targeting seven terror-prone countries. Obama was “heartened” by liberal protests against the travel ban, the former president said through a spokesman.
May 2017 — Michelle returns as school lunch monitor
Michelle Obama took her first shot at President Trump four months into his first term. She bashed the Trump administration on May 12, 2017, for scaling back federal rules aimed at forcing students to eat healthier lunches — a policy she championed as first lady.
May 2017 — Obama knocks the wall in speech to Germans
On May 25, 2017, Obama took a shot at Trump’s signature policy proposal — a wall across the US-Mexico border — while speaking before a crowd of 70,000 in Germany. “In this new world we live in, we can’t isolate ourselves — we can’t hide behind a wall,” the former president said. USA Today described his remarks as a “clear message” to Trump.
That's the tip of the iceberg. The entire list is here.