Avoid them. They go in family group of upto seven generationd. If you see a group of Amaras, they have already counted upto 7 generation to prove they are related to be friends and live together and establish trust among themselves. If you have trouble with one Amara, you will have no friend among the gang of related family. They will all sworm on you. They will be a false wotness to police and in court that you attacked one, two or all of them because you hate their tribe.
They do not have Tigrey, Eritrean, Oromo, Somali friends. They all detest and disapprove their hateful sentiments. Only Gurage and Welaitas have tolerated them. But, they threw out the tolerance of friends.
When confronted, stand your ground. Do the worst you can to defend yourself.
Re: Gurages, be extra careful with Amaras
How about Muslim Amhara's? 
Can Muslim Amhara people be your friends or they should be Wahabis like you Silte and Sodo Godona
Can Muslim Amhara people be your friends or they should be Wahabis like you Silte and Sodo Godona