A film debuting in over 270 theaters across the United States this week uses a flawed analysis of cellphone location data and ballot drop box surveillance footage to cast doubt on the results of the 2020 presidential election nearly 18 months after it ended. Praised by former President Donald Trump as exposing “great election fraud,” the movie, called “2000 Mules,” paints an ominous picture suggesting Democrat-aligned ballot “mules” were supposedly paid to illegally collect and drop off ballots in Arizona, Georgia, Michigan, Pennsylvania and Wisconsin. But that’s based on faulty assumptions, anonymous accounts and improper analysis of cellphone location data,...