how many stitches does it take to repair constructive acts of angry destruction?
(on this page, only constructive actions are considered prohibited labour on shabbat. but there are some destructive acts that are actually constructive. eg tearing to repair fabric that has a blemish woven into it. this leads to a discussion about constructive meaningful tearing. the obligation to tear one's clothes as an act of mourning. and to show one's anger to the household. examples are given of various rabbis who tear clothes, smash vessels and throwing small fish at the maidservant... for english translation of this talmud page, see here)