In the world of Hollywood, some celebrities are more politically active than others. When it comes to actor and director Rob Reiner, he makes no secret about his feelings regarding President Donald Trump.

Reiner on Trump

From the day Donald Trump announced his campaign for president, he instantly triggered a negative reaction from the majority of Hollywood. Celebrities on the East and West coast tend to be more liberal, so when Trump labeled illegal immigrants from Mexico as "rapists" and "murderers," his relationship with Hollywood went south. While many stars have been outspoken over the last year, Rob Reiner is at the top of the list of celebrities who doesn't sugarcoat his feelings about the former host of "The Apprentice." In recent days, the award-winning director has piled on the president, capping it off with a brutal Twitter takedown on March 10.

"Every morning I wake up thinking maybe it's just been a bad dream. Then I get hit with the reality of the DT nightmare," Rob Reiner wrote on his Twitter account earlier this week, before adding, "Adult Reps step up!" On Thursday, Reiner continued his onslaught against Donald Trump, this time targeting the president and his administration's alleged ties to Russia.

"DT advisor Roger Stone in direct contact with Russian hacker Guccifer 2.0.

The smoke is starting to become fire," Rob Reiner tweeted out on Thursday, while using the hashtag, "#TrumpRussia." On Friday morning, Reiner was back at it, tweeting, "Manafort imports Russian intelligence agent to GOP convention. DT directs him to change platform to aid Russia. The fire's burning hotter."

Reiner reacts

Hours later, the director of "When Harry Met Sally" decided to offer his thoughts on the growing scandal involving retired Gen.

Michael Flynn being hired as a foreign agent during the election. "The insane lying is infectious. Pence says he just heard of Flynn being a foreign agent. Rep. Cummings informed him of that months ago," Reiner pointed out.

In his final tweet as of press time, which was sent out on Friday night, the director went off on the commander in chief.

"DT is the most corrupt POTUS in my lifetime. Don't let a soulless pathological liar numb you with his mountain of lies," Rob Reiner wrote, before concluding, "Democracy at stake."

Moving forward

In an example of irony, Rob Reiner speaks of Donald Trump in a similar tone in how he addressed his fictional father-in-law, Archie Bunker, on the hit TV show "All in the Family." Reiner played the role of young liberal Mike "Meathead" Stivic, who routinely clashed with Bunker, the outspoken conservative, who many believe would be a supporter of Trump if the show was still on the air.

Since the show ended in 1979, Reiner has gone on to become one of the most successful directors in Hollywood, while keeping some of his "Meathead" charm to use against the current president.