"Of course, we might seek help from the other countries, we might also go the United Nations, the European Union, we might go to other countries", Wong Yik-mo, CHRF vice convener, said.
Hogg said these had been "challenging weeks" for the airline and it was right for him, and the company's chief customer officer who also abruptly quit, to take responsibility.
Many of these lashed out at the use of tear gas by riot squads and read: "The only time I like pepper is on my noodle soup" and "tear gas only makes Hong Kong cry harder".
Demonstrators say they are fighting the erosion of the "one country, two systems" arrangement that has enshrined some autonomy for Hong Kong since China took it back from Britain in 1997.
In Taiwan, people held a flash mob demonstration in Taipei, the island's capital, in support of the Hong Kong protests. "Isolate them. Get out", some protesters chanted.
A rally in Victoria Park has been called for Sunday by a pro-democracy group that has organized three massive marches through central Hong Kong since June.
The group is appealing the police decision.
Another march planned in Kowloon's Hung Hom district on Saturday has also been banned.
Saturday's rallies began with thousands of teachers marching through torrential rain in support of the largely youth-led protests.
Police tactics against protesters have been hardening as the tenor of clashes intensified this week. Thousands of flights were cancelled amid ugly scenes at the city's airport when protesters set upon men they suspected were Chinese agents.
The man, surnamed Lai, was arrested on suspicion of unlawful assembly and illegally imprisoning and assaulting people.
Almost 750 people have been arrested since the protests began in June and tear gas has frequently been used by police in attempts to disperse protests across the city.
As the demonstrators reached the site of Nelson's Column, they were met with a sea of red as pro-Beijing supporters - including children - flew Chinese flags.
Members of China's paramilitary People's Armed Police force have been training this week across the border in Shenzhen, fueling speculation that they could be sent in to suppress the protests. "This is a significant, symbolic day for Hong Kong, because on that day, five years ago, mainland China rejected Hong Kong's proposal to have universal suffrage", the activist said.
He made no reference to supporting the government or its embattled leader, Carrie Lam, in the advertisements, which encouraged freedom, tolerance and the rule of law. Many businesses, including other major property developers, have publicly backed Lam's administration and the city's police. "I think all these practices in Shenzhen [are aimed at] deterring Hong Kongers, at scaring us", Wong said.
However, the police later gave a last-minute approval after a change in route from Hoi Sham Park in To Kwa Wan to Whampoa MTR station on conditions that the organisers of the teachers' rally put in place at least 100 marshalls and ensuring that the protestors do not take part in illegal activities. Water-filled barricades fortify the airport and government offices.
Under Hong Kong's Basic Law, its mini-constitution, a person found guilty of publicly desecrating the national flag by methods such as burning and damaging it could be sentenced to up to 3 years in prison.
China's propaganda apparatus seized on the violence, with state media churning out a deluge of damning articles, pictures and videos.