"She already knows Judy's story."
Common lesbian symbol 
Public DomainCommon lesbian symbol
Female symbol
Public DomainFemale symbol
Male symbol
Creative Commons AttributionMale symbol - Credit: myrecovery

The symbol on the back of Judy's jacket is two female (Venus) symbols joined together to resemble a male (Mars) symbol. This is not the most common way to make a lesbian symbol, but it is recognizable as such. "Joy Division," seen under the symbol, was an English rock band formed in 1976 and transformed into New Order in 1980, after the lead singer committed suicide.

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Transmission by Joy Division

Blue Monday by New Order