Agreed. It's two separate issues though. Someone who did nothing but donate $100 to a cause they believed in, should still not lose access to their bank accounts, without any legal proceedings or recourse.
I believe they froze assets of the main organizers and people who were actively blocking city streets. After many warnings to discontinue the illegal activity over weeks and weeks. And they could only do it for max a month.
I can be arrested for donating money for any kind of terrorists cause or group, however.