Simplify the following text for a Grade 10 native English-speaking person.
Original: Since their execution , the Twenty Martyrs have been a source of inspiration for thousands of young Armenians through out the world , but most especially to those who joined the Social Democrat Hunchakian Party , fought under its banner , and in its ranks worked for the welfare of all Armenians .
Simplified: Since their execution , the Twenty Martyrs have been a source of inspiration for thousands of young Armenians through out the world .