Complex sentence: About 1,000 Jews unable to move were shot in their homes for "insubordination" and by the next morning, some 22,000 Jews were herded onto the square by the Synagogue in order to undergo a "selection".
Split into simpler sentences: About 1,000 Jews unable to move were shot in their homes for "insubordination". By the next morning, some 22,000 Jews were herded onto the square by the Synagogue in order to undergo a "selection".