What was some theories behind the kiddnapping of the Lindberg baby?

The kidnapping of Charles Lindbergh Jr. in 1932 led to several theories regarding the motive and the perpetrators. One theory suggested that the crime was an act of revenge against Charles Lindbergh, a national hero, due to his controversial views and public persona. Another theory posited that it was a financially motivated crime orchestrated by criminals seeking a ransom, given the Lindbergh family's wealth. Additionally, some speculated that the kidnapping could have involved inside knowledge, possibly from someone close to the family, due to the meticulously planned nature of the abduction.