I think 'raped' may be a little strong.
At the time (March 24, 1832), Joseph and Emma and their five year-old twins were living with John Johnson, who had four grown sons and a 16-year old daughter, Marinda.
According to Marinda's brother, Luke, who went on to become a LDS apostle, and to Clark Braden, Marinda's brother Eli led the mob because he believed Joseph Smith had committed sexual improprieties with Marinda.
I don't believe he was accused of raping Marinda Johnson.
I don't believe he was accused of raping Marinda Johnson
Smith was a married man, older than Marinda. He was claiming to be a Prophet of God, and performing "sexual improprieties" with a young girl was seen as beyond the pale then (and now) and to many in that crowd punishment was called for.
Smith was a horndog.