In maslow's hierarchy the need to receive and give love is a(n) need

Social need 

This level includes our need to feel loved and be accepted. Emotional relationship is the most needed for this factor drives human behavior.

Family relationship, friendship and romantic ones are the important things to consider in order to satisfy this need. Ones this need is not satisfied, we will get depressed, anxious and lonely which give negative impact to one's self and the society as a whole. 

According to Maslow, we need to satisfy this need before we can proceed to the next level. 

Icannot see any engraving so i cant answer 12.massacre means wholesale slaughter and thats what happend when they the boston citizens