Campuses are often hotspots of political protests.
From Mai 68 to the Vietnam War protests, this is a recurring pattern amongst countries. Students have flexible time, are very socially integrated as groups, can be - loudly - politically engaged and - some might say - like the attention. There is also a logistical and sympathy benefit from protesting at the very locations where you are a customer (of education services). This isn't to downplay the reasons why protests are happening, only to note that campuses frequently see protests. Columbia has a long history there.
Those specific students have requested that Columbia divest from Israeli interests so there is nothing all that surprising about these events taking place on campus:
In particular, students are demanding the university drop its direct investments in companies doing business in or with Israel, including Amazon and Google, which are part of a $1.2bn cloud-computing contract with the state’s government; Microsoft, whose services are used by Israel’s ministry of defense and Israeli civil administration; and defense contractors profiting from the war such as Lockheed Martin, which on Tuesday reported its earnings were up 14%.
Are some protesters Hamas apologists?
The infamous Harvard letter was dated the very day of the 10/7 attack and directly blamed Israel for the atrocities committed by Hamas. It was not that much of an outlier at the time either, as it was signed by a number of student groups.
"The apartheid regime is the only one to blame. Israeli violence has structured every aspect of Palestinian existence for 75 years," the letter added.
I don't wish to discredit protesters as a whole by quoting this. But it is a (minor?) aspect of the protest movement. And fixing this is key to having a pro-Palestine message be taken seriously.
Hopefully few student protesters will now be as vitriolically stupid as this. In April 2024, there is much to protest about. That does not excuse letting support for Palestinian rights bleed into sympathy for Hamas. However... protests, not infrequently, are organized or include, Jewish pro-peace supporters.
Are there valid reasons to be protesting?
This question is about the motivations of protesters, at this time, concerning this subject, at those locations. There is a flip side to my scrutiny, and utter dislike, of any apologism towards Hamas by protesters.
Easiest way to express that is to paraphrase a comment made under this very answer:
It's not even about Israel! They hate Jews and are antisemitic.
Much of the world reacted with great sympathy to Israel's suffering on 10/7. Six months later, with casualty rates approaching that of those of of European nations after six years of WW2, with a war being waged with controversial methods and with debatable adherence to IHL and the Geneva conventions. With no end in sight, no clear view of when Israel will stop, no insight on their post-war intentions, and with Western nations having had to resort to air drops to feed civilians at times?
Pull the other one! It's too easy, when asking about motivations, which this question does, to answer it *
by blaming it on all of the protesters being somehow, solely, motivated by atavistic antisemitism. And to pretend there is nothing to protest about the Israeli government's actions.
Are these protests being policed even-handedly? Competently?
Last, but not least, the heavy-handedness displayed lately at Columbia, with hundreds of arrests, will, to anyone familiar with the historical record of protest movements, seem to carry the risk of inflaming matters and protests further. As another answer pointed out, the way these matters have been handled by universities so far seesaws between extremes, without much political savvy. It is hard to balance between freedom of expression and freedom from harassment for students whose course-taking is impacted (so far, the First Amendment seems to be a distant consideration for some, while others struggle to figure out if calls for genocide would be against their universities' codes of conducts).
*
Well, no, nobody actually answered this question that way. That well-trod argument has been confined to - numerous - comments.