There IS a Solidarity Fund to which you can contribute at:
Chicago Teachers Union Solidarity Fund
222 Merchandise Mart Plaza, Suite 400
Chicago, IL 60654
And, yes–you can get more info. from the CTU website (Googling
Chicago Teachers Union will lead you to it).
Diane Ravitch's blog 
Link to the online contribution page: https://afl.salsalabs.com/o/4013/c/468/p/salsa/donation/common/public/?donate_page_KEY=7204
A check is on the way. Wish it could be more.
I sent a check too!
I contributed earlier in the week.