The hashtag #MakeAmericaGreatAgain gained immense popularity during the 2016 US presidential election, becoming a rallying cry for Donald Trump's supporters. It represented their desire for change and their belief in Trump's ability to restore America's greatness.

The #BlackLivesMatter hashtag was created in response to the acquittal of George Zimmerman in the shooting death of Trayvon Martin. Its primary purpose was to raise awareness about police brutality against African Americans and to advocate for racial equality and justice.

The #VoteLeave hashtag was widely used by supporters of the Brexit campaign in the 2016 UK referendum on EU membership. It represented their desire to leave the European Union and regain control over the UK's borders and laws.

The #MeToo hashtag was created by Tarana Burke in 2006, but it gained widespread recognition in 2017 when it was used by victims of sexual harassment and assault to share their stories and experiences. The hashtag aimed to raise awareness about the prevalence of sexual misconduct and to encourage victims to come forward.

The #FreeHongKong hashtag was widely used by supporters of the 2019 Hong Kong protests, which called for greater democracy and autonomy from China. It represented their desire for freedom and self-determination.

The #ClimateStrike hashtag was created by Greta Thunberg in 2018 to raise awareness about climate change and its impact on the environment. It was used to mobilize people to take action against climate change and to support political candidates who advocate for climate policies.

The #BlackLivesMatter hashtag was widely used during the 2020 Black Lives Matter protests, which erupted after the death of George Floyd. It represented the movement's call for racial justice and an end to police brutality against African Americans.

The #StopAsianHate hashtag was created in response to the rise in anti-Asian racism and violence during the COVID-19 pandemic. It aimed to raise awareness about the issue and to promote unity and solidarity among Asian communities.

The #StandWithRussia hashtag was used by supporters of the 2022 Russian invasion of Ukraine. It represented their support for Russia's actions and their belief in the legitimacy of the invasion.

The #IStandWithAhmed hashtag was created in support of Ahmed Mohamed, a 14-year-old student who was arrested for bringing a homemade clock to school. It aimed to raise awareness about Islamophobia and discrimination against Muslims, and to advocate for policies that protect students from discrimination and harassment.

The #WomensMarch hashtag was used by supporters of the 2017 Women's March, which took place in Washington, D.C. and other cities around the world. It represented the movement's call for gender equality, reproductive rights, and an end to violence against women.

The #NeverAgain hashtag was created by survivors of the 2018 school shooting in Parkland, Florida. It aimed to call for stricter gun control laws and an end to gun violence, and to raise awareness about the issue of school shootings and the need for safer schools.

The #FeelTheBern hashtag was widely used by supporters of the 2020 US presidential candidate Bernie Sanders. It represented their enthusiasm for his campaign and their belief in his progressive policies.

The #BlackoutTuesday hashtag was created in response to the deaths of George Floyd and Breonna Taylor, two Black Americans who were killed by police officers. It aimed to raise awareness about racial injustice and police brutality, and to promote diversity and inclusion in the media and entertainment industry.

The #MAGA hashtag was widely used by supporters of the 2021 US presidential candidate Donald Trump. It represented their support for his policies and their belief in his ability to make America great again.