。。
Gropers are truly the enemy of women. I will absolutely never forgive them.
Literal
Gropers [topic-は] truly women [genitive-の] enemy. Absolutely not-forgive [copula-です].
A strong emotional statement about 痴漢 (ちかん), which refers to groping/sexual molestation on trains — a persistent social problem in Japan that has led to women-only train cars. 女の敵 ('enemy of women') is a blunt, forceful phrase. 絶対に許さない ('absolutely will not forgive') uses 絶対に for emphasis. The です at the end softens the grammar slightly but doesn't reduce the emotional intensity. This is the register of social media outrage or personal conviction.