Why was George Latimer's capture in boston so important to the abolitionist cause.

Because of the attention it brought

Explanation:

After Latimer was arrested in Boston in 1842 he was accused of larceny. Many people tried to rescue him, but it was unsuccessful.

He was fined, but then around 65 000 people signed a petition asking for the new laws to be adapted. People of Massachusetts through this expressed their stand to cut all connections with slavery.