From [1] Agence France-Presse and Getty Images:

The LA Times' caption:

Roses are red ... and [2] unwanted in Saudi Arabia as a Riyadh flower vendor shows how the vice squad crush red roses while enforcing a law banning Valentine's Day celebrations in the conservative desert kingdom. Islamic law strictly segregates the sexes before marriage, so flowers, chocolates and romantic dinners shared by boyfriend and girlfriend are next to impossible.

Hence... jihad aganst flowers, chocolates, and romantic dinners.