Some don’t seem to understand the connection between universities and Israel and the divestment demands of the student protests. Three links that may help:

Cornell student suspended over Gaza protest speaks out - YouTube

Across many American universities - student protesters have set up encampments on their campuses and are calling for their universities to withdraw investment from companies with links to the Israeli military.

The challenge colleges face with student demands for Israeli divestment | PBS NewsHour

Protests show no signs of letting up and universities are handling their respective situations differently. Columbia University warned of mass temporary suspensions, state troopers were called in at Texas and nearly 300 people were arrested at other schools over the weekend. Geoff Bennett has perspectives from student protesters and discusses their demands of divestment with Charlie Eaton.

Divestment was also used against South Africa to help end apartheid: Wikipedia

Disinvestment (or divestment) from South Africa was first advocated in the 1960s in protest against South Africa’s system of apartheid, but was not implemented on a significant scale until the mid-1980s. A disinvestment policy the US adopted in 1986 in response to the disinvestment campaign is credited with playing a role in pressuring the South African government to embark on negotiations that ultimately led to the dismantling of the apartheid system.