Why do you think it was considered a disgrace to depict the crucifixion of christ in early christian art? why do you think they changed to include these images again?

It was considered a disgrace to depict the crucifixion of Christ in early Christian art because,

The crucifixion was infrequently shown during the first three centuries of Early Christian art. So because the idea of the resurrected Christ was so fundamental to their religion before the Middle Ages, early Christians chose to focus on the "triumphant" Christ instead of a dying one.

The absence of iconography that will dominate later Christian art is a conspicuous feature of third-century Christian art. Images of the Nativity, Crucifixion, or Resurrection of Jesus Christ, for example, are not found in this early time. The position of Christianity as a mystery religion best explains the lack of direct representations of Christ's life.

For more information about Christian art refer to the link:

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The depiction of Christ's crucifixion in early Christian art was considered a dishonor because,

During the first three centuries of Early Christian art, the crucifixion was rarely depicted.

Early Christians decided to focus on the "triumphant" Christ rather than a dying one because the idea of the risen Christ was so vital to their religion before the Middle Ages.

Third-century Christian art is notable for its lack of iconography, which will come to dominate subsequent Christian art. Images of Jesus Christ's birth, crucifixion, or resurrection, for example, are not found in this period. The paucity of direct representations of Christ's life is best explained by Christianity's status as a mystery religion.

To know more about Christian art refer to the link:

link