塗鴉，不只是當代藝術的表現形式之一，也是公共空間中權力爭奪的一個重要的場域。尤其是香港的街頭塗鴉，曾在社會運動中扮演著對抗權威、凝聚人心、延續倡議能量的潛在角色。從占領中環、雨傘革命到反送中運動，其形式一直相當多變且具機動性，故成為推動社運的重要動力。在反送中運動期間，街頭的塗鴉常隨著抗爭發展而不斷大量產出並蔓延各地。然而，在《香港國安法》推行後，因執法力度加大，使得社會氣氛逐漸保守，讓人民的聲音與街頭的塗鴉都被大規模移除。不過，塗鴉在這抹去的過程中並未真正消失，它開始轉向抽象化與隱喻化。這個視覺語言上的轉變，除了顯示抗爭意志不息外，也凸顯了政治禁語背後的荒謬。而這些抗爭者在香港留下過的痕跡，也將成為見證這時代的重要印記。

Graffiti is not only one of the expressive forms of contemporary art but also constitutes a significant arena for the contestation of power within public space. In particular, street graffiti in Hong Kong has played a latent yet potent role in resisting authority, fostering collective solidarity, and sustaining the momentum of sociopolitical advocacy during social movements. From the Occupy Central movement and the Umbrella Revolution to the Anti-Extradition Law Amendment Bill Movement (commonly known as the Anti-ELAB movement), graffiti has remained highly mutable and mobile, thereby becoming a vital force in the progression of civil resistance. During the Anti-ELAB movement, graffiti proliferated across the urban landscape, evolving alongside the trajectory of the protests. However, the implementation of the Hong Kong National Security Law marked a turning point, as heightened law enforcement measures contributed to a growing atmosphere of political conservatism. As a result, both the voices of the people and the visible traces of graffiti were systematically removed from public view. Nonetheless, graffiti did not vanish entirely in this process of erasure. Instead, it underwent a transformation toward abstraction and metaphor. This shift in visual language not only signified the persistence of protest consciousness but also exposed the absurdity underlying the regime of political censorship. The vestiges left by the protestors in Hong Kong now serve as powerful testimonies to an era of resistance and repression, offering enduring inscriptions of a historical moment that continues to resonate.