I haven't been keeping statistics on injuries from PalArab internal violence, but the Al-Mezan center does.
In the first three months of this year, according to Al-Mezan, 1065 PalArabs were injured in internal violence (their count of deaths was not too far off from mine - 147 vs. 160 during those three months - so this looks like an accurate number.)
In contrast, the UN OCHA counts 513 PalArabs injured from Israeli actions during that same time period.
I guess that the PalArabs must be practicing "genocide" against themselves!
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