Is there any evidence Mahmoud Khalil actually supported terrorism?

I keep on seeing this claim everywhere but cannot seem to find solid evidence for it. Government officials when asked on live TV couldn't even give an answer either and either shrugged or pivoted when asked to clarify or give evidence.

Some people say that because he was in the protests last year that automatically means he supported terrorism, but that's not true. After all, all the people who protested what happened to Iraq in 2003 weren't automatically all Ba'ath Party worshippers. Likewise, all the people who protested against what happened to Vietnam in the 1960s weren't automatically all Marxist-Leninists. Likewise, just because he was in the protests last year doesn't mean he automatically supported Hamas just by sheer presence.

With this in mind, is there any concrete evidence he supported terrorism?

Note: I know the makeshift encampments were illegal. That's not what I'm asking. I'm asking if he supported terrorism or not.