Defenestration

 Defenestration:

 According to Merriam-Webster

1:  a throwing of a person or thing out of a window

2:  a usually swift dismissal or expulsion (as from a political party or office) 

 In a sentence,

Carol was still mourning the defenestration of her poor cat, Whiskers, done in by a disgruntled hobo, when she herself was defenestrated from her position on the city council.