Try to document and record any bodily injuries caused to you, because without it you would not be able to raise the issue of responsibility of the perpetrators neither in the domestic courts nor file further application to the European Court of Human Rights.
Possible options:
A/ Submit incident reports to the RA Special Investigation Service, or even the police station which works in the area of the violation incident. After obtaining opportunity to undergo forensic examination and get a corresponding medical conclusion.
B/ Apply for a medical aid to the medical establishment, where your injuries will be recorded and corresponding documents will be prepared.
C/ If the first two options are impossible, making possible high quality photographs of the damaged parts.
Always remember: Your complaint filed to the European Court in addition to being a possible opportunity for financial compensation for you may prevent the possible acts of violence against your compatriots in future.
Advocate Yervand Varosyan wrote this in his Facebook Account.