Intuitively, the turmoil likely causes the decrease.
Let's say we have 3 groups:
1. Support Palestine 2. No strong opinion 3. Support Israel.
Before the Hamas massacre, the 3 groups already apply to Harvard.
Now that Harvard showed to support Palestine borderline Hamas. It alienates Number 3 and partly Number 2.
Number 1 already applies to Harvard therefore doesn't increase in size.