from the article:

Of Manal’s four brothers – Saed, Omar, Ameed and Khorsheed – three were eye doctors; the other was an ENT doctor. Hamouda says they operated Gaza’s largest network of family-owned eye clinics.
“We have no Hamas members [in our family]. They’re just ordinary people: doctors and grandmothers and grandfathers and uncles and aunts and children,” Abu Shaban said.
“I mean, if you want to exterminate Hamas then you should go to the source.”

Please just read the article. A quote or two doesn't do justice to the loss this family has incurred.