Why is this important?
Because the Goldstone Report took pains to distinguish between the supposedly "civilian" Gaza police and the Al Qassam Brigades. My argument at the time was to point out that Hamas itself did not distinguish between the two, as well as the fact that some 75% of the "police" killed in Cast Lead were also member of the Qassam Brigades, a terror ("militant") group even according to Goldstone.
But now we are seeing that not only are Hamas police tightly integrated with the Qassam Brigades, but that the Qassam Brigades are being deployed as police!
To Hamas, every person in uniform is a mujahid, and part of their military, even if they sometimes do routine police duties. Goldstone's idea, and theinsistence of some other groups, to distinguish the two is a complete fiction (and came from virulently anti-Israel NGOs), and does not reflect reality.
Just ask Hamas.