Lionsgate faced backlash over the trailer for Francis Ford Coppola's film Megalopolis, which included fabricated quotes attributed to famous critics. 

The trailer aimed to position Megalopolis as a significant artistic endeavour, akin to Coppola's previous works. However, it featured negative quotes that misrepresented critics such as Pauline Kael and Roger Ebert's actual reviews of his earlier works, including The Godfather and Apocalypse Now.

Upon investigation, it was revealed that the quotes were not genuine, with sources like Vulture confirming that none of the phrases could be found in the critics' original reviews. This led to significant criticism, especially since some quotes were attributed to critics who have passed away, making the situation appear not only misleading but also insensitive. 

Lionsgate pulled the trailer and issued an apology, acknowledging the error in their vetting process and parting ways with the marketing consultant responsible for the mishap.

Speculation arose that AI may have been used to generate these quotes, as similar phrases emerged when prompts were given to AI models like ChatGPT. However, it remains unclear if AI was definitively involved in the creation of the trailer quotes.