Don't be daft!
Of the 37 suspects arrested .....24 remain in custody, while 13 have been released.
Among those 24 still in custody, 18 are Israeli Arabs, (= 75% of those still in custody), two of whom(Arabs), have admitted to lighting fires.
That leaves 6 non-Arabs (presumably Jews or others) of the 24 suspects still in custody, which shows most of the suspects in custody are Arabs.
Nice try at twisting the facts to suit your bigoted rant, ....but no cigar.