They should avoid becoming involved in political issues, no matter how right or just a certain cause might seem.
بَلْ رَكَّزَ عَلَى مَلَكُوتِ ٱللهِ ،‏ لِأَنَّهُ ٱلْحَلُّ ٱلْحَقِيقِيُّ لِمَشَاكِلِ ٱلْبَشَرِ .‏